I am not normally into altering images - maybe a few basic fixes in iPhoto - but no drastic post processing. Well, that may be about to change ;) I recently found a few free downloads that I like, and one of them is Pixlr. I used it to give this photo a more worn, vintage feel with the "dirt" application! While this stuff is fun and I just love seeing the ways that others use applications to do really cool things, I think that I will ultimately remain more of a purist (even if that makes me more boring in the photography world)!
What downloads or programs do you like to use for image alteration?