github/learn.github.com — pull request #20 by randomecho (2012-12-11 18:53:07+00:00)
Title: Google Groups no longer supported, shut down May 2011

Since shuttered back in May 2011, take it off the footer to not lead any into a ghost town.

The announcement: https://groups.google.com/forum/?fromgroups=#!topic/github/TbbbBkAm-jk