I could (already have, but still not working) create an app for symbian, maemo and windows xp/7.
Symbian could be tricky because I have no device here for testing it.

I had that Idea when I first found that site. The main dislike that I had with it was that I was forced to type in all my scores manually. With an app that problem would be solved.

I think the best way is to let the users deside. So if there are some people who want there own angrybirds online highscore, I will continue developing my own highscore site and my own client.
But when people would love to have a maemo/win/symbian client to access angrybirds-score.com I would do that too.

For me it's just earning some skills in qt development. Doesn't matter what come out in the end.

EDIT:

Did anyone know how to edit, change, or reset a poll? I can't find any solution. There is only a bug saying that there is no option for this.