MyFreeCams is a good site for that.
I've seen SkyPrivate profiles where the models have their wishlists links shown, but there's not a link embedded in their profile (It's where the guy would have to copy the link and paste it). I do see that there's a section where you can link to your website, so I'm guessing if you wanted to use your wishlist link as that website, you could do that?
I've also seen models have their wishlist URL shown in their CamModelDirectory profile, but without the link embedded.
You can also put your wishlist link in your Twitter profile in that small bio section.
A lot of models also have their wishlist profile posted on their Model Centro page.