I've been looking for exactly this! What a great way to get people involved with my site! Such a great invention! Seriously amazing!
Seeing as to how this is only round one for you guys I'm excited to see what you guys create next!
A few greedy wishlist items:
* A second "Add To List" box on the bottom right of the app. (I didn't realize they can add to list from top left. ----- It would also be great if I got credit for people who clicked that link to get my free pro membership.
* Users being able to sign up for list.ly without leaving my site. (I mean, its costs enough time/effort to get people to my site.)
* At first I kept clicking the tags area thinking I could add my own. That would be nice. I later realized you can only add tags when you enter list options.
* I'd like to remove the embed option from my website. (Don't need to make it so easy for other modeling blogs to steal the lists I've worked so hard on.)
* The 3tags/crowdrank/que/searchitems bar doesn't quite fit on the blog... would love to remove. Distracting. Blog visitors don't know what it is. Just unnecessary.
* A little quirk: it seems a tweet was automatically sent on my behalf (which is great). since then I've updated the page - it doesn't seem the tweet link updated in realtime with it. seems to be a bit of a delay.
* A free vip membership for being the first one to comment on this app ;)