Nije odgovor na tvoje pitanje, ali možda će ti pomoći u odluci da li da se osloniš na ovu "sposobnost" googlebot-a.
Citat:
...Specifically, when we encounter a <FORM> element on a high-quality site, we might choose to do a small number of queries using the form... Only a small number of particularly useful sites receive this treatment... The web pages we discover in our enhanced crawl do not come at the expense of regular web pages that are already part of the crawl, so this change doesn't reduce PageRank for your other pages.
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http://googlewebmastercentral.blogsp...tml-forms.html