Another venue for artists. Prime books is launching Lightspeed, an online sf fiction magazine that promises to buy artwork. Not sure what their pay rates will be but it's worth keeping an eye out. They say submission guidelines are due out at the end of the year.Lightspeed holding page here.
More info at SF Scope here.
(As an aside, among our various attempts to name Tor.com something else, Lightspeed was our longest contender....We even have mastehead sketches.)