A few travel experts are themselves completing a trip this morning. Google's managed to get the folks behind Ruba - a travel site - to join its organization, and they're all going to the Googleplex. Ruba is 15 months old, and prior to this arrangement, was backed by Benchmark Capital (which has also invested in eBay, Twitter, and Yelp) and Draper Fisher Jurvetson (of Baidu, Hotmail, Skype, and Tesla Motors fame). That speaks to some pretty interesting things taking place.