Two of the internet’s top monitoring companies have recently released reports showing Microsoft’s revitalized search engine Bing rapidly growing. If recent search engine reporting trends continue at their current rate, a realistic full-scale search engine war could be in store. Reports of Bing’s search share growth are being released, coincidentally, with recent rumors that Bing’s search results are actually mimicking Google’s results. Microsoft is strongly denying the claims; nonetheless, Google’s “Bing Sting” is catching some eyes across the web.

Search result plagiarism or not, Hitwise’s search numbers for January 2011 show a 21% month-over-month increase in searches conducted on Bing from December 2010 and a total 6% increase in search share for “Bing powered search” in the same one month window. Hitwise’s recent report also shows that Bing’s search success rate is still over 15% higher than Google’s, with Bing search queries ending in a visit to a website 81.54% and Google searches ending in a visit only 65.58% of the time in January 2011.

comScore has also released their own results showing a similar increase for Bing. According to their report, Bing saw a 29% increase in year-over-year search activity from December 2009-December 2010.   Comparably, Google saw an increase of 13% during the same time period.

The current numbers are not completely eye popping for Bing, but with their continued marketing blitz and supposed “powered by Google” accusations, the battle for search engine supremacy is finally heating up.