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搜索引擎要求简表 | |||||
| 搜索引擎名称 | Ask/Teoma | 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 |
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| 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 | 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?) | 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 | 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.
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