I went to your site, skimmed the FAQ, skimmed the "About" page, and I still don't know what your service actually does or looks like. All I know is that you think email is bad for coordinating "micro-events", and so I'm guessing that somehow you're going to help me organize my micro-events without email (which is a problem I didn't know I had).
I know what you're going to try and help me do, but I have no idea how, and until I see that it's a how that actually makes my life easier, I still haven't seen a problem in my life that needs to be fixed by you.
Would like to see screenshots or something.
Just my $.02, probably nothing original. Best of luck to you.