Google not invited to Facebook’s party

Looks like the two Silicon Valley giants, Facebook and Google aren’t going to give up their ground so easily as the war rages on, with the former requiring app developers to use only in-app advertising from approved vendors. Of course, it is no surprise that Google is not on the list. Apparently, the social network giant has mentioned that it has modified its rules and requires apps with in-app advertising to only use Facebook-approved companies, as well as other companies who are willing to sign off on the company’s Advertising guidelines. Both Adsense and Double Click are not on the list, and does it come as no surprise that they both belong to the largest advertising company on the Web? What do you think of this move – will Google be doing anything down the road as a retaliatory measure?