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The <head> Cascade and Robots META Tags
pageoneresults




msg:3745084
 3:50 pm on Sep 15, 2008 (gmt 0)

<head>
<meta content="noindex, nofollow" name="robots" />
<title></title>
<meta content="index, follow" name="robots" />
</head>

Would I be correct in taking an educated guess at the above implementation and stating that the bot will index and follow the page containing the above sequence of elements?

 

encyclo




msg:3745106
 4:17 pm on Sep 15, 2008 (gmt 0)

I don't have a definitive answer, but what happens if the bot is programmed to stop at a noindex rule and not parse the rest of the document? Technically-speaking would this be wrong? I don't think so. So with your example, only testing will tell. I don't believe that either behavior would be "wrong".

pageoneresults




msg:3745117
 4:32 pm on Sep 15, 2008 (gmt 0)

I was wondering if one takes precedence over the other and if the cascade does not apply in this instance? Test? Arrrggghhh! Let me add to the other 100+ tests that may be going. Why can't this be in writing somewhere already? ;)

g1smd




msg:3745145
 5:03 pm on Sep 15, 2008 (gmt 0)

*** what happens if the bot is programmed to stop at a noindex rule ***

In practice they don't. Google takes and holds a copy of the file, follows links out, assigns PR to the URL and so on.

They just don't show it in the public SERPs.

encyclo




msg:3745167
 5:30 pm on Sep 15, 2008 (gmt 0)

In practice they don't

Or rather, in practice Google don't. But what about the others? Live, Yahoo, etc.? As there is no real, formal "standard" either for robots.txt or for meta robots elements, the above example would be open to interpretation which could differ between bots.

pageoneresults




msg:3745235
 7:10 pm on Sep 15, 2008 (gmt 0)

The above example would be open to interpretation which could differ between bots.

Therein lies my concern. If programming a bot I'd be following the rules of engagement in regards to the cascade. But, this is a Robots Directive and I'm 50/50.

Would it stop at the first directive and go no further?

Or, would it continue to index the entire <head></head> and honor the second directive which would override the first from a cascading perspective?

Bets? ;)

A little OT, I can confirm that G does not honor noindex, nofollow, noarchive. All three directives combined in that sequence. It will noarchive.

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