I automagically filter out these common words (along with any words less than 3 characters long):
it's, i've, http, img, imgur, youtube, that, this, then, and, you, its, the, but, for, www, com, net, are, where, was, when, im, have, just, not, like, with, they, what, there, their, did, theyre, dont, you're, your, all, can, get, them, thats, out, has, had, one, from, about, know, jpg, png, i'm, i'd, i've, don't, would, why, any, gif, people, because, see, more, some, that's, also, were, how, will, isn't, his, who, much, than, which, into, really, got, use, think, well, still, only, time, way, too, i'll, could, those, here, make, other, lot, most, want, now, good, though, should, doesn't, even, say, being, didn't, they're, sure, can't, she, her, him, https