If we’ve learned anything from watching the turnover of tech giants like Yahoo! and MySpace, it’s that internet darlings rise and fall. And there’s something darkly fascinating about watching it happen in realtime.Maybe we’re seeing it now with Twitter and Facebook– some of us will mourn the loss of the communities and connections that we’ve created in the virtual spaces owned by these billion dollar companies...While others will enjoy visiting the graves of these once unstoppable behemoths  to tramp the dirt down.Either way, the values and trends and hopes and ambitions that go into the architecture of the virtual world say as much about us as the architecture of the real world. And that’s what these two stories are all about.The Lost Cities of Geo Redux