Search Engine Guide reports it's seeing signs of an oncoming "Google dance," the introduction of an algorithmic change that could have major effects on who gets listed among the top sites for each keyword. The site indicates that among the big losers appear to be those who have had their sites linked far and wide from irrelevant web content. If true, this would constitute a setback to comment spammers and other annoying web "marketers" whose effluent of links -often found in discussion areas of sites - pollute otherwise relevant content.