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搜索引擎优化入门指南(search-engine-optimization-starter-guide)
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搜索引擎优化入门指南(search-engine-optimization-starter-guide),主要针对Google搜索优化
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Table of Contents
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Googlebot
Crawling content
on the Internet for
Google's index
every day, every
night, non stop.
From here on, I'll be
explaining various points
on search engine
optimization (SEO)!
SEO Basics
Create unique, accurate page titles
Make use of the "description" meta tag
Improving Site Structure
Improve the structure of your URLs
Make your site easier to navigate
Optimizing Content
Oer quality content and services
Write better anchor text
Optimize your use of images
Use heading tags appropriately
Dealing with Crawlers
Make eective use of robots.txt
Be aware of rel="nofollow" for links
SEO for Mobile Phones
Notify Google of mobile sites
Guide mobile users accurately
Promotions and Analysis
Promote your website in the right ways
Make use of free webmaster tools
An example may help our explanations, so we've created a fictitious
website to follow throughout the guide. For each topic, we've fleshed
out enough information about the site to illustrate the point being
covered. Here's some background information about the site we'll
use:
Website/business name: "Brandon's Baseball Cards"
Domain name: brandonsbaseballcards.com
Focus: Online-only baseball card sales, price guides, articles,
and news content
Size: Small, ~250 pages
“Paid” Search, AdWords
Organic Search
Search engine optimization affects only organic search results, not
paid or "sponsored" results such as Google AdWords.
3
Create unique, accurate page titles
SEO Basics
Glossary
Indicate page titles by using title tags
Page title contents are displayed in search
results
(
1) The title of the homepa
g
e for our baseball card site, which lists the business
name and three main
f
ocus areas
.
<h
tm
l
>
<
head>
<title>Brandon's Baseball Cards - Buy Cards, Baseball News, Card Prices</title>
<
meta name="description=" content="Brandon's Baseball Cards provides a
l
arge selection of vintage and modern baseball cards for sale. We also offer
d
ai
l
y
b
ase
b
a
ll
news an
d
events in"
>
</
head
>
<b
o
d
y>
(
2
)
A user performs the query [baseball cards]. Our homepa
g
e shows up as a result,
w
ith the title listed on the first line (notice that the query terms the user searched
f
or appear in bold).
If the user clicks the result and visits the page, the page's title will appear at the top
of the browser.
(
3
)
A user performs the query [rarest baseball cards]. A relevant, deeper pa
g
e
(
its
t
itle is unique to the content of the page
)
on our site appears as a result
.
A title tag tells both users and search engines what the topic of
a particular page is. T
h
e <tit
l
e> ta
g
s
h
ou
ld
b
e p
l
ace
d
wit
h
in t
h
e
of the HTML document (1). Ideally, you should create a
<
head> tag HTML
u
nique title for each page on your site
.
If your document appears in a search results pa
g
e, the contents of
the title tag will usually appear in the first line of the results (if
you're unfamiliar with the different parts of a Google search result,
you might want to check out the anatomy of a search result video b
y
G
oogle engineer Matt Cutts, and this help
f
ul diagram of a Google
search results page
)
. Words in the title are bolded if the
y
appear in the
user's search query.
search quer
y.
This can help users recognize if the page is
likely to be relevant to their search
(
2
)
.
The title for your homepage can list the name of your website
/
b
usiness and could include other bits of important information like
t
he ph
y
sical location o
f
the business or ma
y
be a
f
ew o
f
its main
f
ocuses or oerings
(
3
)
.
S
earch en
g
ine
Computer function that searches data available on the Internet using keywords or
other specified terms, or a program containing this function.
<
head> ta
g
An element that indicates the header in an HTML document. The content of this
element will not be displayed in a browser.
HTML
Abbreviation for HyperText Markup Language, a language used when describing web
page documents. It denotes the basic elements of web pages, including the document
text and any hyperlinks and images embedded within.
Search quer
y
Single or multiple terms which are input by the user when performing a search on
search engines.
4
SEO Basics Improving Site Structure Optimizing Content Dealing with Crawlers SEO for Mobile Phones Promotions and Analysis
Links
The anatomy of a search result
http://googlewebmastercentral.blogspot.com/2007/11/anatomy-of-search-result.html
Diagram of a Google search results page
http://www.google.com/support/websearch/bin/answer.py?answer=35891
Best Practices
Page titles are an
important aspect of
search engine
optimization.
Choose a title that eectively communicates the topic of the page's content.
Accurately describe the page's content
choosing a title that has no relation to the content on the page
using default or vague titles like "Untitled" or "New Page 1"
Avoid:
Create unique title tags for each page
Each of your pages should ideally have a unique title tag, which helps Google know how the page is
distinct from the others on your site.
using a single title tag across all of your site's pages or a large group of pages
Avoid:
Use brief, but descriptive titles
Titles can be both short and informative. If the title is too long, Google will show only a portion of it in
the search result.
using extremely lengthy titles that are unhelpful to users
stung unneeded keywords in your title tags
Avoid:
5
Make use of the "description" meta tag
SEO Basics
Glossary
Summaries can be defined for each page
What are the merits of description meta
tags?
(
1) The be
g
innin
g
of the description meta ta
g
for our homepa
g
e, which
g
ives a brief
overview o
f
the site's o
ff
erin
g
s.
<h
tm
l
>
<
head>
<
title>Brandon's Baseball Cards - Bu
y
Cards, Baseball News, Card Prices</title
>
<meta name="description=" content="Brandon's Baseball Cards provides a
large selection of vintage and modern baseball cards for sale. We also offer
daily baseball news and events in">
</
head
>
<b
o
d
y>
(
2
)
A user performs the query [baseball cards]. Our homepa
g
e appears as a result,
w
ith part o
f
its description meta ta
g
used as the snippet.
(
3
) A user performs the query [rarest baseball cards]. One of our deeper pa
g
es, with
its unique
d
escription meta ta
g
use
d
as t
h
e snippet, appears as a resu
l
t
.
A page's description meta tag gives Google and other search
engines a summary of what the page is about (1). Whereas a
p
age's title may be a few words or a phrase, a page's description meta
t
ag might be a sentence or two or a short paragraph. Google
W
ebmaster Tools provides a hand
y
content analysis section that'll tell
you about any description meta tags that are either too short, long, or
duplicated too man
y
times
(
the same information is also shown for
<
title> ta
g
s). Like the <title> ta
g
, the description meta ta
g
is placed
within the <head> ta
g
o
f
your HTML document.
Description meta ta
g
s are important because Google might use
them as snippets for your pages. Note that we say "mi
g
ht" because
G
oo
g
le may choose to use a relevant section o
f
your pa
g
e's visible
t
ext if it does a
g
ood job of matchin
g
up with a user's query.
A
lternatively, Google might use your site's description in the Open
if your site is listed there
(
learn how to Directory Project prevent
search engines from displaying ODP data
)
. Adding description meta
t
ags to each o
f
your pages is always a good practice in case Google
cannot
f
ind a
g
ood selection o
f
text to use in the snippet. The
W
ebmaster Central Blo
g
has an in
f
ormative post on improving
snippets with better description meta tags.
W
or
d
s in t
h
e snippet are
b
o
ld
e
d
w
h
en t
h
ey appear in t
h
e user's query
(
2
)
. This gives the user clues about whether the content on the page
m
atches with what he or she is looking for.
(
3
)
is another example,
t
his time showing a snippet
f
rom a description meta tag on a deeper
p
a
g
e
(
which ideally has its own unique description meta ta
g)
containin
g
an article.
S
ni
pp
et
Text displayed beneath the title of a corresponding web page on the search results
pages of a search engine. A web page summary and/or parts of the page that match
the search keywords will be displayed.
Open Director
y
Project
(
ODP
)
The world's largest volunteer-run web directory (a list of Internet links collected on a
large scale and then organized by category).
Do
m
a
in
An address on the Internet that indicates the location of a computer or network. These
are administrated to avoid duplication.
6
SEO Basics Improving Site Structure Optimizing Content Dealing with Crawlers SEO for Mobile Phones Promotions and Analysis
Links
Content analysis section
http://googlewebmastercentral.blogspot.com/2007/12/new-content-analysis-and-
sitemap.html
Prevent search engines from displaying ODP data
http://www.google.com/support/webmasters/bin/answer.py?answer=35264
Improving snippets with better description meta tags
http://googlewebmastercentral.blogspot.com/2007/09/improve-snippets-with-
meta-description.html
site: operator
http://www.brianwhite.org/2007/04/27/google-site-operator-an-ode-to-thee/
Best Practices
Use description meta tags to
provide both search engines
and users with a summary of
what your page is about!
Accurately summarize the page's content
writing a description meta tag that has no relation to the content on the page
using generic descriptions like "This is a web page" or "Page about baseball cards"
filling the description with only keywords
copying and pasting the entire content of the document into the description meta tag
Avoid:
Write a description that would both inform and interest users if they saw your description meta tag as
a snippet in a search result.
Use unique descriptions for each page
using a single description meta tag across all of your site's pages or a large group of pages
Avoid:
Having a different description meta tag for each page helps both users and Google, especially in
searches where users may bring up multiple pages on your domain (e.g. searches using the site:
operator). If your site has thousands or even millions of pages, hand-crafting description meta tags
probably isn't feasible. In this case, you could automatically generate description meta tags based on
each page's content.
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