When Microsoft (NASDAQ: MSFT) unrolled its new search product, Live Search Club, I personally didn't think much of it. Microsoft has been trying to recapture market share from Google (NASDAQ: GOOG) and Yahoo! (NASDAQ: YHOO) for years and I thought this was just another attempt that would soon be forgotten. However, according to comScore (NASDAQ: SCOR), I am wrong.

Every month, comScore releases its search engine rankings for the United States. June was an interesting month for search engines according to the most recent release. Search activity in America continues to boom - up 26% year over year and 6% month over month. Interestingly, Microsoft's sites were the only sites that gained in market share last month - quite significantly in fact.

While Google and Yahoo lost about 1.2% in market share and the Ask network remained flat, Microsoft's sites were able to increase market share by nearly 3%. ComScore attributed much of Microsoft's gains to its Live Search Club.

I doubt this news is enough to significantly move Microsoft's stock because the company is so gigantic and its search products produce so little revenue. I also don't think Google or Yahoo! are going to be hit because small fluctuations in market share are rather common on the internet and the companies still saw overall increases in search traffic.