ColdWetDog writes "The Dropbox file storage and synchronization service has managed to attract 50 million users and $250 million in venture capital. The founder of Dropbox, Drew Houston, says he is determined to build the next Google or Apple, not to sell out to them. Even for a guy whose paper valuation is around $600 million, it seems like the best he could hope for is another Facebook-level company — file storage isn't that sexy. I wish him luck in his bid to remain independent. I'd rather see Dropbox remain fairly agnostic with regard to other Internet services."