OT: local technical community portals

[Jason Hsu]

For the Minneapolis/St. Paul area of Minnesota, there is a technical community portal at http://tech.mn/.  You'll see that this portal has links to user groups, networking events, jobs, etc.  No, I didn't start this thread to tout this site.

MY QUESTION: What are the local technical community portals for other places, such as Chicago, Silicon Valley, Los Angeles, San Diego, Dallas, Atlanta, Boston, etc.?