The picasa one looks alrite but the other 2 look warped, some people might click on them out of curiousity but what if they have or dont want to have anything to do with adsense? seems a bit pointless really.
Maybe if you warp them a bit more, it will form into letters that resemble another language, then people from other countries will click on them.
Yes, if they are on a photo site, I think they have every chance of getting clicked, or anyone interested managing their photos/omages.