Wish list is a relative term. If I truly wanted it, I would buy it. There are apps that have ellicted a lukewarm response from me, and I likely would not purchase them unless they dropped down to .99c, but I won't lose any sleep if that never happens.
It's not the list of stuff that I want to buy that's huge, but rather the list of games that I want to actually get around to playing one day. I only put games on my iPod that I am dead set on playing, and I have about 3 pages of games, most of them being long and in-depth games. And that's not to mention the overload of console and handheld games that I have yet to thoroughly. To a degree I'm dreading getting my Xbox back simply because I'll be so behind on new releases.