We don’t know how we missed this story last week, but we did: PlanetOut has joined forces with “PlanetOut Inc. has put Expedia Inc. in charge of travel booking on its web sites. It didn’t give financial details of this agreement. Expedia, based in Bellevue, Wash., agreed to advertise on PlanetOut sites as part of the deal, and to sponsor some of the company’s events.” [Business Times]