Blogitter.com Startup Ideas Wanted.

I dont know whether I am posting in the right category or not. So moderators, please move this thread to any suitable category, if this is not the one already.

Ok, now come to the point, I have a domain name Blogitter.com, which sounds like blogging+twitter or something like that. This one I won in a contest 4 months ago. And now I need to start something in it, which will hone my web skills as well as serve the community a little as well.

I need advices like what to do on the site. I have some ideas like:
1-twitter app or something....which will integrate somehow with blogs(old one I know....)
2-twitter like minifeed...with tumblr like features....somewhat a sequel of power twitter....
3-A facebook app...with twitter like goodness or something similar...
4-Last and boring....my personal thoughts on everything like social, technical, news type....

So what do you guys advice? I need a healthy discussion over here...so please...tell me whatever come to your mind....waiting for the replies

 

I think your Idea#4 suits much and can give you desirable results in making better use of the domain name... in fact others are looking boring and old ideas to go with