From inception Thursday night to near-feature-complete on Sunday morning, I consider it one of my better weekend hacking projects.
http://leftright.me/
I built it with node and Redis which was particularly fun. Redis truly is the AK-47 of databases.
This project has deeply engrained my longtime hate of Internet Explorer. Everything should be kosher in Chrome and FF but I had to make some compromises for IE.
I sent the link to a few friends and the userbase grew from there. It's not much but it's definitely something for having it live for a day.
I'm really looking forward to any constructive criticism you guys can throw my way. Thanks!
Oh, good job - especially for a weekend project. Like others have stated, it wasn't immediately clear to me the function of the site at first.