UCSD '99 CS grad here. I opted to stay in SD for my career. There has been a huge shift in the last five years -- plenty of startup activity downtown (http://

UCSD '99 CS grad here. I opted to stay in SD for my career. There has been a huge shift in the last five years -- plenty of startup activity downtown (http://sandiegostartupweek.com/ http://sandiegostartupweek.com/), some of the meetups are quite active (the main js meetup regularly pulls in over 100 people). Still, it's probably not quite as active as a secondary hub like Austin, but at this rate it probably will be within the next five years.