Graphic.ly is a digital comics store. The desktop edition is built on Adobe Air. It also has iPad/iPhone apps. On installing and first launch, it’s a little memory-greedy on my laptop — I imagine that if I did a restart and then launched it, it’d even out just fine. Haven’t given it a good roadtest yet, but the install was so smooth, and the first look at the thing so promising, that I thought I’d bring it to your attention.
EDITED TO ADD: Guess they haven’t got the payment system worked out properly yet. Payment does not lead to comic appearing in collection. This can be annoying. It can take a while for it to occur to you to quit the app entirely and relaunch it, whereupon you find the comic you bought in your collection. Not hugely impressive user experience.