There are many message boards for Baja residents and tourists, but here's one that I particularly like:
There are many forums in the message board, including:
Baja Questions & Answers
Baja Trip Reports
Baja Restaurant Reviews
Baja Accommodation Reviews
Baja Surfing
Baja Diving & Snorkeling
Baja Real Estate Available
Baja Real Estate Wanted
and more...
Check it out - there's a lot of good information whether you're planning to build a house in Baja or you're just going for a short visit.