Google writes today to summarize several options you can use
- NOINDEX – prevents the page from being included in the index.
- NOFOLLOW – prevents Googlebot from following any links on the page. (Note that this is different from the link-level NOFOLLOW attribute, Googlebot from following an individual link.)
- NOARCHIVE – prevents a cached copy of this page from being available in the search results.
- NOSNIPPET – prevents a description from appearing below the page in the search results, as well as prevents caching of the page.
- NOODP – blocks the Open Directory Project description of the page from being used in the description that appears below the page in the search results.
Chart
| COMMAND |
Ask |
Google |
Microsoft |
Yahoo |
| NOINDEX |
Yes |
Yes |
Yes |
Yes |
| NOFOLLOW |
Yes |
Yes |
Yes |
Yes |
| NOARCHIVE |
Yes |
Yes |
Yes |
Yes |
| NOODP |
No |
Yes |
Yes |
Yes |
| NOYDIR |
No |
No |
No |
Yes |
| NOSNIPPET |
No |
Yes |
No |
No |
| Robot Name |
TEOMA |
GOOGLEBOT |
MSNBOT |
SLURP |
| Does Robot Specific Tag Override All Robots Tag? |
??? |
No |
No |
No |
all major search engines not to cache the page, not to use Open Directory or Yahoo Directory titles or descriptions for you page listings.
Notice that in the tag above, there are no spaces between the commands. What if I did this?
<meta name=”ROBOTS” content=”NOARCHIVE, NOODP, NOYDIR”>
Google writes today that spaces make no difference. Use them if you want or not, the tag means the same thing. Microsoft tells me the same thing, as does Yahoo.
What if you did this, with no commas:
<meta name=”ROBOTS” content=”NOARCHIVE NOODP NOYDIR”>
Microsoft tells me this is fine. I didn’t ask Yahoo about this, and Google says commas MUST be used. So use commas and don’t be a pain.
You need to have a robots tag for each particular search engine you want to target.
<meta name=”TEOMA” content=”NOINDEX”>
<meta name=”GOOGLEBOT” content=”NOARCHIVE”>
<meta name=”MSNBOT” content=”NOODP”>
<meta name=”SLURP” content=”NOFOLLOW”>
Googlebot understands any combination of lowercase and uppercase.
Author:
Aamir Hasan औथोर:
आमिर हसन أثر
أمير حسن .
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