"Google has acquired online travel guide and community Ruba. Ruba is a visual travel guide and tour review site that provides travelers with visual guides written by other travelers. .... Google says that Ruba will be integrated in iGoogle."

Techrunch:
http://techcrunch.com/2010/05/21/google-acquires-travel-guide-startup-ruba/

Ruba:
http://www.ruba.com/blog/2010/05/21/ruba-team-joins-google/