The rich get richer. According to Comscore, December online search query volume rose 30% from a year earlier. Google (GOOG) and Yahoo! (YHOO) picked up tiny bits of share. A few tenths of a percent. Google’s figure hit 47.3% of the search market. Yahoo!’s hit 25.8%.

That the large sites are doing well is not news.

But, Microsoft (MSFT), which really needs a flagship product to help resurrect MSN.com and kick off Microsoft Live, keeps dropping in the search category. In just one month, from November to December, its share dropped from 11% to 10.5%.

For all the chest thumping that goes on at Barry Dillers IAC/Interactive (IACI), its Ask.com search operation watched its share of the market drop from 5.5% to 5.4% in a month. Ask is going exactly no where.

Douglas A. McIntyre can be reached at douglasamcintyre@247wallst.com. He does not own securities in companies that he writes about.