On my Twitter feed:
From
PCGamersWorld -- I don't think they're particularly big or well-known, but they are very active and often get news out before some of the bigger outlets. And they don't neglect indie games when it comes to press (or at least I like to think so, since they've always done good things with KarBOOM's press releases).
They're well worth following for those of you that use Twitter to keep up with gaming news.
Jibb