The Ubuntu folks publish the UbuntuWeeklyNewsletter. It’s one of the many resources they provide that have made Ubuntu my favorite Linux distribution.
A page linking to all the issues so far published can be found at UbuntuWeeklyNewsletter/Archive
Starting around February of 2007 they began compiling a list of articles about Ubuntu as well as blogs posts about Ubuntu.
I have just gone through all the issues published so far this year, and posted in today’s “links” my own picks from those lists.