"and went to places to actually work there, for 6 months, or a year, or more" -- yeah if you have the ability to do that (job, family, etc) that is a great way to live IMO.

You mention the local linux groups. My brother, who does something similar to you, uses the local Ping Pong clubs. He is a top rated player, and its enough of a niche sport, but one that is everywhere, that its a great international community