The dirty/grudge brushes on the text? I've seen it EVERYWHERE but I can't find the brushes themselves.

First graphic from http://backtalkk-lyts.com/
Second graphic from http://www.mixtapelove.com/

Could I have the link, please! Thanksss!

Did you try asking the owners of the websites? I doubt they'll answer because owners of those kinds of sites think they're above helping people, but it's worth a shot.

Haha that's the exact reason why I don't bother.

Why don't you just use textures instead?

Are you also talking about the little circle things? I think those are called halftones.

I know that they're called halftones. I have halftones brushes already, but they don't look anything like the ones on those graphics.

Try resizing this texture so it looks similar to that.

I was about to say it's a texture of a halftone, but Mike is right.
Any circle texture would do.

I know. I tried asking the owner of irockstarz.com where she got her fonts from and I never got a response. bitch.

I just realized that those brushes weren't actually halftone brushes but grunge denim brushes. Soooo....

Can anyone point me to the right direction of good grunge denim brushes?

I tried typing grunge denim into deviantart, but nothing similar to that came up. However, I found this set which has a dot grungey patterned one in it. You could probably recreate the look with that either by using it as is or playing with it a bit.