Satellite images? So last year. Mashup maps are the hot item again. Here are three map-ups of the center of the universe.

SF Bay Area Tech Companies
By: Michael Doeff, blogger
This map on Wayfaring.com proves it — dot-coms will make San Francisco the new capital of Silicon Valley. Until Google buys them all.

Web 2.0 Innovation Map
By: Fourio, web developers (via Jeff Clavier)
Apparently, some Web 2.0 ideas were thought up outside the Valley. Bah, all lies.

IamCaltrain
By: Cal Henderson, Flickr
What do developers do when Yahoo buys their startup? They map their escape route.