Quote:
Originally posted by docjohnson
This is incorrect. The google dance is/was(who knows what they are up to with these rolling updates) only the period when google propogates it's new database to all of its servers. This would have nothing to do with google applying an expired domain filter. If anything it would make sense to have the OLD site up when the GoogleBOT came crawling so they see the same site in their cache. It's when the site becomes radically different that problems would arrise and a red flag could be raised. What they then likely do is compare the site against their existing cache, and if it is radically different they run a whois check. They simply don't have the processing power to whois check over 4.2 billion documents for no reason, so they become selective. The dance has nothing to do with this.
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I'm just basing my claims based on results that I did and those of SEGuru's. Thus far, it seems to be correct but if you have a theory as to why some domains are penalized and some others aren't, I welcome you to post it, I'll strongly consider all points. Regarding the 4.2 Billion documents, I'm pretty sure Google just does WHOIS lookups on the root domains, not each page google indexes. That being the case, there are well under 60 million domains in the gTLD's so it is certainly feasible for Google to do.
WG