Biz Stone, co-founder of Twitter, announced on his blog today that he is leaving the micro-blogging site to pursue other projects. The title of his blog post was “It’s So Obvious” which hints at what he’ll be spending the majority of his day on.

From his blog post he said:

As for the bulk of my time day-to-day, I’m thrilled to announce that Evan Williams, Jason Goldman and myself will be relaunching The Obvious Corporation as co-founders. Our plan is to develop new projects and work on solving big problems aligned along a simple mission statement: The Obvious Corporation develops systems that help people work together to improve the world. This is a dream come true!

Stone has been with Twitter since it’s start 5 years ago and noted in his blog post that he is not completely cutting ties. He said he will still “commit part of my time to hands on help with Twitter wherever and whenever I can be of assistance.”

We wish him the best on his next endeavor!