Dang, I was searching for that :) That's where we got started.

We also sent promo codes to..ars technica, engadget, appleinsider, tuaw, gruber over at daring fireball, chris pirillo (plus a few extra codes to give away to his viewers, which was additional publicity), and some others I can't remember.

Depending on your application you may want to submit to sites specifically catering to your audience. I know some of our promo codes went to people at IRC news/review sites since Colloquy is an IRC client. And as an example, if your app was a game, you'd want to send a code over to sites like toucharcade, run by the same guy behind macrumors, who also frequents hn as 'arn' :)

Thanks so much mahipal and silencio for the pointers, greatly appreciated.

I've reached the point where my app and its webapp counterpart are both technically complete, so I'm all about the polish now.

My app isn't groundbreaking (it's going to be living in the Entertainment category), but I think that the similar apps that are currently in the store suggest that there's a place for it. Most importantly, it allows users to be creative and share their product with others; I'm not the gatekeeper, just the groundskeeper (clean up after the animals that mess my garden).