In a sudden joining of former leaders turned also-rans in the mobile browser arena, Opera announced tonight that it has acquired Skyfire for about $155 million in cash and stock. According to the press release, Opera believes one of the things the two can help each other with is its WebPass program that provides short-term mobile data, by further optimizing user's data requirements. Skyfire CEO Jeffrey Glueck will become an executive vice president at Opera and oversee joint offerings for the two, as well as remain CEO of Skyfire as an independent but wholly-owned subsidiary of Opera. If you're stil