Google hints that it may introduce the format for some other categories, saying it will “increase ... the number of advertisers able to participate.”<p><a href="http://news.ebrandz.com/google/2009/2939-google-debuts-comparison-ads-aimed-at-mortgage-market.html" rel="nofollow">http://news.ebrandz.com/google/2009/2939-google-debuts-compa...</a>