I decided to start keeping a list as I continue developing of places to submit iPhone apps. I decided what better place to put it then on this blog so the guys running these sites can come here, and post about their site. These are sites that are openly asking for developers to submit apps to them. Many of these sites receive a surprisingly large amount of traffic.
Please post about any others that you know of and they will be added to the list.
Here are the ones I was able to find in a few minutes of searching ranked by their Alexa traffic rating:
It may seem like a pain to submit your app to all these sites, but you have to remember that with just a small push that could be enough to get you into the top download lists for your category which will vastly increase your downloads.