There are some links making the rounds at the moment warning of scraper sites that have stolen images from RedBubble and other sites without permission and are using them to generate traffic to their sites. Several of mine have been taken and tons of others have had huge amounts stolen. They're low resolution and the sites aren't selling the images, just using them to get you to look at their website. Some of them have been shut down due to letters sent by RedBubble members about copyright infringement. Here's a link to what's doing the rounds at the moment. http://www.redbubble...ability/journal
where have you seen your own photos. I'd have no idea if someones taken mine. I did see one on facebook that I'm not sure where they got it from, a friend told me about it. that's the only one I know of.
One of the journal entries in the link I posted has a link to a site called ratedesi and if you type your RedBubble username in it brings up a heap of your images. I just went to double check and it looks like they've successfully had this site stopped too as it just says page not found when I put my username in.