How to Forbid Google from Updating a Site Listing?

[juice99]

Hello, is there any way to block google grom visiting my pages that i have already listed - but something that will not result in deleting my google those pages?

I can see pages from 2002 or even older (i mean they were last accessed in 2002 by google) and after that they were deleted from server but google doesnt know about this... (it is still listed somewhere in google)

So how to do this?

[troels nybo nielsen]

Why do you want to block them? The problem is not that they are updating your listing. The problem is that they are not updating it but are leaving you with listings that are more than two years old. I suggest that you submit those URLs to Google so that they spider them and see that the pages do not exist any more.

[victor]

Respone to Google's if-modified-since header, and say the pages are unchanged.

That's a form of cloaking of course, so the final result may not be what you want.

[Wizard]

Respone to Google's if-modified-since header, and say the pages are unchanged.

I'd be careful - Googlebot may sometimes enter without "If Modified" header, the same as it sometimes come as "Mozilla" - to detect cloaking. Using fake modification dates of faking last-modified information could theoretically cause penalty.