JumpTap, a provider of mobile search technology, reports an 8% increase in revenues last month for mobile search.  They also report click-through rates of 36% and a 4% increase in unique users of mobile search.  The JumpTap study reports the top categories for mobile search as music, adult content, games, sports and television.

In related news, Microsoft is looking to acquire Third Screen Media, a provider of mobile advertising and marketing software and services.  Third Screen Media has recently signed content providers MSN, USA Today and TV Guide.

This all points to the swelling marketplace of mobile search and advertising - yet another way to promote your Web-based business.