StackExchange has quite a few Q&A sites that cover various topics. And each site has its own community and its own feel. Each site giving quality information away for free.

This week I discovered that StackExchange has a Unix Questions & Answers site in meta mode. For me and fellow linux users, this is Godsent.

One or two Questions from the site:
How do delete a file whose name begins with “—”
Break a large file into smaller pieces
Can I launch a graphical program on another users desktop