Basically you upload your .SC2Replay files and I'll convert them into web replays. My twist is I make recordings from 2 players perspectives and show em both to you on the same page (sync'd of course). I have some other options as well, but I'm really looking for feedback on what things people do not like and what things you think would be cool.
From a bootstrap/startup perspective, my goal for this was to produce something that would scale decently with almost no $ investment. Have this running on 1 ec2 micro, static pages and assets (js,css,img) being served up by github pages. Dynamic pages are being served directly from memcached via nginx module (pages are stored already gzipped). If anyone is interested in the implementation details I'd be willing to share cuz I think some of the techniques I used could help others looking to bootstrap their own webapp.
I also have a mobile version so you can watch em on your phone. http://m.ggreplayz.com