My pictures your site ???

Something weird is going on with my systerm.  Below are  screen grabs from  twit.tv domain.  If you click on the picture and enlarge it full size you'll notice that those are not the normal twit.tv pictures.  Those are pictures that I've uploaded to my picasa website.  So ??? How did my pictures end up on someone elses website?   Good question....   And no I didn't photoshop my own pictures into the screen grabs.  What reason would I have for doing that?   Anyway I'm posting the grabs below in hopes that someone can help me understand how this happened.  If you can let me know! Thanks in advance! -Matt