WordPress just announced that WordPress.com Users Can Now Register .CO Domain Names:
We’re excited to announce the addition of .CO as a new top-level domain on WordPress.com. If you’re interested in buying a custom domain name for a new or existing site, you can now choose and register .CO from among our existing options (.ME, .COM, .NET, .ORG).
This was the first big project that I was involved with at my new job at Automattic.
It was a pleasure to see how smoothly people from different areas of the company who all work remotely came together to launch this project in such a short period of time.