I just read a blog entry by a woman who's photo (of her family, no less!) was stolen and used in a newspaper article, an article that she had serious issues with besides the stolen image. So are journalists trolling Flickr for images now that they've cut photography staff?! Argh.
I don't understand why Flickr thinks it is such a great idea to be able to post full resolution images. Seems they should be advising users to reduce and resize images to deter theft.
Its distressing but not stoppable. The only thing to do is to be recognised as the owner, first. (eg, I think anyone might have trouble stealing my fire shots, simply because they have been seen in a lot of places). I dont want my stuff stolen, but at the same time, apart from never posting it online anywhere, can't see really how its avoidable, *if* it happens to be good enough. I don't believe mine is. I dont have my stuff downloadable but that wont stop a determined thief.