My only advantage is that everything is created in flash...the galleries..etc...so they would have to screenshot the page and hope the quality holds.
Right now, I have a lot of my work, most unedited, available on flickr.com/omegaphotoz
As far as the watermarking goes, I've had to do that already and have hated it.
--------------- Added 26 Jun 2008 at 08:38 am ---------------
I've created a deviantART and am going to use their watermarking technology to do it.