While a lot of attention has been focused on Twitter with questions about whether Ruby on Rails scales, LinkedIn has been quietly running a RoR application on Facebook that is beating down around 1 billion page view per month. Bumpersticker, a relatively trivial Facebook application that allows you to create a cartoon that you can put on your Facebook friends

Snipplr is a public source code repository that gives you a place to store and organize all the little pieces of code that you use each day. Best of all, it lets you share your code snippets with other coders and designers. Did we mention it works with TextMate, too? It's code 2.0.