Per Bud Gibson: "The O'Reilly publishing group's blog about what they think is the next big thing. Important because these guys are so heavily wired into "The Valley" (i.e., San Francisco and Silicon Valley). "
Great-looking tutorial on Linux... I've only looked at it a little bit but it was very helpful and comprehensive for the problem I had at the time (understanding Linux disk partitioning).
Gobby is a free collaborative editor based on libobby, a library which provides synced document buffers. It supports multiple documents in one session and a multi-user chat. It runs on Microsoft Windows, Mac OS X, Linux and other Unix-like platforms.