Okay, just thought I should run these by you guys real quick.
CUT AND PASTE: The usual style of Homestuck and Homestuck's fan comics. I might note that Diamond is particularly good at this.
RIPS: When you download an image of MS Paint Adventures and edit it.
A good example of a rip (taken from here)
HERO/VILLAIN MODE: This is how you let someone know something awesome is happening. The characters are hand-drawn and more proportionate.
GRIMDARK MODE: A little something I thought we could introduce. Grimdark Mode is how you let someone know something freaking terrifying is happening, like when Cass is mutilating the imp.
Everybody understand? Good. Anyone want to add a style? Say so in the comments.