Theft of photos is something that really angers me. Bloggers seem to try to gain kudos by posting work that they just happen to have found on the web. Apart from anything elso, it's counterproductive: it discourages photographers from posting their work and puts potential models off the idea of posing. I've noted a serious decline in the number of people wanting to pose, and I'm increasingly seeing models ultimately decide not to, for fear of having photos of them spread all over the internet. It's a vicious circle, really. I love showing my work, but I increasingly feel I can't, so I end up working less...
The only solution I've found for deviantart is to use the dreaded deviantart watermark. I know it's ugly, you don't need to tell me. I've just posted a photo called Voiles, which I love. But I nearly took it down when I saw it on my screen with the watermark: all the movement seemed to have disappeared. I also have to keep my photos small. I'm slowly putting back all the photos I put in storage a few months ago. But I'm having to get rid of a lot of the diptyques I'd started posting earlier in the year: the watermark would have been in the middle, effectively allowing thieves to photoshop it off their screen thefts.
Again, I know a lot of people will not like seeing photos in this format. Could I just suggest that you complain to bloggers who steal other peoples' work, rather than the victims of their theft?