Recently, I had someone steal some pictures from my blog album and use it in their blog to convince his friends that he had taken that trip!
I left a comment asking where he got his pictures from, but to cut a long story short, the photos are still there. He did some crude photoshop of it, but it's pretty obvious they were mine.
I think he did it for the sole purpose to getting attention and trying to make me (and his blog audience of about 100) angry and have something to talk about. I think it also increases his hits (he has AdSense). So I've decided to let it go and just try to ignore the fact that my photos are floating around on someone else's page... =(... advice now would be great.
Things I have learnt from this experience:
1) Photos on the net are photos on the net. Don't be naive and assume that people won't take them and use them for their own purposes. Nobody cares about intellectual property. So even though you are putting up photos to share with your family and friends and you don't mind them downloading them... there will always be about 10 strangers downloading for every family member.
2) People do stupid things to get attention.
3) Your identity is precious and your responsibility.
4) People are big fat liars.