To anyone who's weary of putting your images online (or posting them so small and low-res that they're impossible to appreciate), I found an interesting article on http://www.jmg-galleries.com/blog/ on some new image recognition software, that will allow anyone to search the internet, not by text, but by an image itself.
So, soon you will be able to see exactly where your photos end up on the internet and if anyone has taken or taken credit for your work.
Here's an exert from the article:
"Up until recently it’s been nearly impossible to know for certain where your online photos might end up on the Internet. As we’ve heard over the years a growing vocal minority will be the first to jump on photographers complaining about online image theft stating “Get used to it. You put it online. That’s how it is.” This argument is anything but true and frustrates the hell out of photographers who know better.