Skein is a server managed by Chuck. This page used to be a collaborative writing site, but we've shifted focus to offering space for various people's personal projects and geekery. You can see a snapshot of the old skein site here.
Other things to see:
Chuck's current company is Precision Polling.
And while it's not hosted on Skein, I gotta put a shout out to my previous venture, BillMonk.