(warning : slightly soapboxish, sorry :-P)
Creative Commons offers an easy way to choose a personalized license for your work (You can get little pieces of html to stick on your page).
It makes it easier for people to reuse your art (on websites, or in video games) without having to bug you about it. And it makes it easier for you to chose who can do what with which picture.
What would you think about being releasing some of your work here under a Creative Commons license ? (I'm interested in any feedback)
Not that there's any problem with not being eager to share / give away stuff :) When I make something I don't want others too fool around with, I rarely even put it on the web :)
I just want to make people aware of creative commons, so that one day they may opt for it rather then just adding "this is some crappy stuff I made when I was 12, feel free to do what you want with it as long as you don't make any money".
(Plus, there are now ways to search the web for stuff under a specific creative commons license. So even something under Attribution-NonCommercial-NoDerivs may be useful for someone making, say, a pixel art tutorial (I assume that zooming up a picture doesn't constitute a derivative work).
Hmm, actually the "making a tutorial" seems to be a pretty good example ... because the guy doesn't necessarily care much about what kind of art it is, as long as he is allowed to use it (though I expect it'd be considered Fair Use, which is why it's no problem to also use stuff from commercial games like existing tutorials already do. Hmm.)
(er, oops, drifted away a bit there, sorry :-P)