Featured - The most amazing art in the group.
Official Characters - SEGA, Archie or other official Sonic characters.
Fan Characters - Characters made by Sonic fans.
Doodles And Sketches - Rough, unfinished drawings, submit clean lineart to another folder.
Literature - Fanfiction and Sonic related stories
Comics - Fan made Sonic comics
Everything Else - Stuff that won't fit under any other category.