I caved and got a Tumblr. I think I will use it to draw doodles for those '100 theme challenge' things and whatnot. There is even an 'ask' link for people to give me suggestions of things to doodle! Even NSFW things.
edit: I just realized that there wasn't a comment system on Tumblr. So I did some Googling and discovered a way to allow comments. I've now added the application, so feel free to leave comments on the pictures submitted there! Thanks for the support! :)