Ok honestly you all need to stop such a big deal out of this. I doubt many of us, literally nobodies compared to Robredo, would do such a thing even if it was for a good cause - just imagine how much courage Robredo has to do something like this he knows he'll be ridiculed for? Its the intention and purpose thats important, not the fact that he's nude. don't look at the picture if you don't like but don't make fun of his cause. Of course it would have been a lot better if he had clothes on.. I have no idea what the difference in clothing would make for the Everyman Foundation but that decision is not ours to make and its already made and has happened. Now if they had someone on the WTA tour pull this stunt - in the same pose that Robredo's in.. that'd be a real charitable thing now of that WTA player wouldn't it.. 
Yeah, that would be great. I would say : Sharapova, Ivanovic, Vaidisova, Kirilenko, Kournikova would be some good choices.
On the other hand, the very thought of Henin, Mauresmo.... Oh boy, doesnt sound good. I hope it never happens.