As TechCrunch reported, May 28 was supposed to be Microsoft Bing day. Everyone knew for months that Steve Ballmer would announce the new Microsoft Bing search engine during the All Things Digital conference in San Diego. Then minutes later, Google announced a stealth project 4+ years in the making called Wave at the Google IO conference in San Francisco.

So which generated more buzz: Microsoft’s new decision engine, or Google’s new communication platform integrating e-mail, IM, document sharing, search, publishing, Twitter (Twave) and more?

The spikes almost mirrored each other on the 28th, but today Google Wave is generating increasingly higher buzz. Instead of talking about Bing replacing Google search, everyone is talking about whether Google Wave will be the communication platform of the future.