Giving it away - blogcastr

OK, I'll throw this idea out there, because I'm pretty sure I won't have the chance to make it myself.

Could someone please create:
A RIA that allows me to write a blog post, and then cross post it to multiple blogs? Blogger, WordPress, Typepad, Moveable Type, My Space... hell, Open Diary, I don't care.

If you give me a cut, I'll even design the UI, branding, etc.

Or if there's something out there that does this well, and is pretty, could someone tell me about it?