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Not really, because many sites with dynamic content and no cloaking will also use the noarchive tag to avoid having stale content captured.
Personally I haven't experienced much difference with or without the tag, so most often choose to prevent Google from caching.
if(preg_match("/MSIE/i",$HTTP_USER_AGENT)) header("Location: www.widgets.com");
So the code would detect if the user had an IE browser, and if so, forward them to another URL. Could Google detect this, and if so, they would penalize the site correct?
(edited by: jrap at 4:05 am (utc) on May 26, 2002)
Using redirection is not a good idea, most likely it will be penalized or it will be handled badly (i.e. wrong page indexed).
True cloaking does not return any redirect code(that's how search engines detect redirects), it simply delivers the page to the requesting entity, usually by server side code.
Bingo. The people that are getting busted cloaking are getting turned in by their competitors. Competitive markets ensure it.
Cloaking needs to be imperceptible to the engines, AND human viewers.
thats what a viewer would see.
now if it was a spider
it would redir to