Anyone used, or thought about using, such sites? Essentially a non-free Flickr, but with the added bonus of better integration with selling photos etc and the ability to customise layouts and integrate into your own domain better.

I'm considering zenfolio and moving my better images from flickr across if I can get a decent domain, thinking that if I even sell a single image a year it'd be more than I can get from micro-stock etc. Quite a few wildlife trusts have used my stuff now (probably because its free) but I'm hoping to make that free->paid jump sometime this year.