James Cameron has joined Twitter, thereby setting the stage for a momentous revolution in how we see and appreciate tweets. Taking the plunge at the urging of Ryan Seacrest, apparently, Cameron says he “never tweeted before because I’m a long winded blowhard, and they don’t have enough characters.” Perhaps what Twitter needs is an added dimension to fit them all, ha ha, ho ho. Anyway, Cameron is off to a running start, engaging in self-promotion (for the upcoming Sanctum) and trading quippy banter with Kim Kardashian, leaving him one Twitpic of his lunch away from accomplishing pretty much everything one can do on Twitter.