Lot a people don't have much to say, really. They view simple praise as a useful comment, not realizing the artist will likely never see it (and if you favorite it, you obviously like it). My favorites are still the one's who say the image is "awesome" right after changing their avatar to that image.

Something I found humorous: deleted a pic the other day for being a duplicate. The kicker is, the uploader had commented on the duplicate 2 days before, so he knew it was on the site already.

Uploaded post in question: post #147040. Commented on post: post #142217