2010 was a banner year for Google in terms of new products and features introduced. The company, which made more than 40 acquisitions to improve products and gain traction in key markets, responded to challenges in search and cloud computing collaboration by Microsoft. Google also accelerated its Android operating system development to keep pace with Apple’s popular iPhone and iPad tablet computers. The Nexus One appeared Jan. 5 and Google never looked back. The company launched its Google Buzz social conversation service the following month as an alternative to Facebook, which this year emerged as the search engine’s greatest threat. While Buzz hasn’t exactly caught on with the majority of Google users, there are plenty of products and tools for the company to hang its hat on and be proud of this year, along with a bomb or two. Here eWEEK outlines Google’s best and worst products and features of 2010. We tried to start with what we perceived as the best, then some middle of the pack items, and finally, the bombs. You wont all agree with us, and you’ll no doubt wonder where Caffeine and other improvements are on this list, but we tried to go with what users have told us and Google’s own reporting about products as the deciding factors for us. Enjoy, and happy New Year. – …