搜索引擎要求简表 
Last updated: 11/01/2003

搜索引擎名称 Ask/Teoma Google Fast Alltheweb & Lycos US AltaVista Inktomi
用于显示的<title> 字母数 94 83 147 79 111
title关键字是否重要 Yes Yes Yes Yes Yes
用于显示的description 字母数 147 144 257 148 -
是否支持<meta> description  Yes No
(see note 1)
Yes Yes No
(yes on paid inclusion)
是否支持<meta> keyword  Yes No No Yes ?
<meta>keyword是否重要 - No No No ?
<meta> redirect problems? - Likely Likely Likely Likely
<meta> robot tags support - NOINDEX
NOFOLLOW
NOINDEX
NOFOLLOW
NOINDEX
NOFOLLOW
NOIMAGEINDEX
NOIMAGECLICK
 
Indexes all visible text on page - Up To ~102k Fast Representaives say it's unlimited but waste of time over approx 1000 char Yes Up To ~400k
Searches are Case Sensitive No No No No No
Word Stemming (hawaii=hawaiian) No (Teoma) No No No No
Word Capitalization (Is toy=Toy?) Yes Yes Yes Yes Yes
Keyword Order
(Is "paris hotels"="hotels paris"
No No Yes Yes(?) No
Plurals
(Is toy=toys?)
Yes No No No No
Pages score higher based on alphabetical order of domain name? No No No - No
Do newly submitted
pages score better?
- No No No
(older is better)
No
Link Popularity Yes Yes
(major influence)
Yes Yes Direct Hit
Reviewed sites
score higher?
- Yahoo / ODP Preference - - -
Preference for big sites? (lots of pages) Yes Yes No Yes No
Will the spider accept a cookie and use it while indexing your site? No No No No No
"Click" popularity influences page score? No No No   Future?

 

What text is
indexed?
(and can be found during a default search)
Ask/Teoma Google Fast
Alltheweb.com
& Lycos US
AltaVista Inktomi
Words in <title> 97 125 characters 1129
characters
417 characters Yes
Words in <style>   No No Yes Yes
Meta Keywords
<meta name=
keywords...
1129
characters
No No No 1129 characters
Meta Description
<meta name=
description...
1129
characters
No No 1129 characters 1129 characters
<no frames> Content   Yes Yes Yes Yes
Dublin Core
Meta Data
  No   Yes No
<!-- comment -->
tag text
  No No No No
Hidden Input
form text
(Trick #14)
  - - No No
Form <option> text Yes Yes Yes N/A No
Link Descriptions
<a  href="www.your
server.com">
keyword</a>
  Yes ? Yes No
Text within url link
<a href="http://www
.yourserver.com/
keyword.html>
  Yes ? - No
Indexes .asp files   Yes   Yes Yes
Indexes pages with "?","=","&" in the URL?   Yes   YES Yes

 

Spidering (how deep will they go and how long does it take?) Google Fast
Alltheweb.com & Lycos US
AltaVista Inktomi
How many different pages can you get indexed? No Limit? No Limit? 400 No Limit
Submitted Pages 1-2 months Around 15 -30 days 2-30 days 48 hours
to three weeks
1 level deep Monthly-Excellent Excellent 2-4 weeks 2-4 weeks
Multiple levels deep Yes! - Excellent Excellent Poor Poor
Supports Robots.txt Partial Yes Yes Yes
Supports <meta> robot tag Yes Yes No No
Frames Support (noframes tag) Yes Yes Yes Yes
Follows Frameset links Yes - No Yes - Will index content of framed page and list URL of frameset
Follows Image Map Links - - - -

 

Penalties Google Fast
Alltheweb.com & Lycos US
AltaVista Inktomi
# of pages you can submit per day without a penalty 10?
Submit home page and let spider find other pages on it's own
50 1000 per AltaVista but we recommed going slow. Careful, Free Submit Has Penalty
Submitting too fast No No Yes No
Hidden Text Yes Maybe Yes if reviewed by humans None
Repetition of words in title Maybe No Yes Maybe
Repetition of words in <meta>description No No Yes No
Repetition of words in body text Yes No Yes Maybe
Small Sites (less than 5 pages) No No No No
Links on home page to offsite urls No No - -
No Links to your page from other sites Yes No Maybe Yes

1 - Google treats the meta description as indexable text, just like body text. But they do not use the meta description tag to format the meta description in the search results.... UNLESS that is the only indexable text on the page, only then will you see meta description text show up in the search results. They do not support that tag as the meta tag is intended for a page summary, they just index it the same as the body text.