I know plenty of US citizens that have emigrated to Canada, via school or work related methods. It's not particularly hard, it just takes time for the paperwork to clear.

Get a job, get a green card, wait five years, get your citizenship.

That first step is a challenge but if you're the type who reads Hacker News you're better off than most. My green card application for Ireland was approved yesterday. (Yes yes Ireland has numerous flaws - I still vastly prefer life here).

Or this if you can work for yourself. The requirements are pretty easy to satisfy.

http://www.pond-crosser.com/northern-europe/netherlands/dutc...

HUGE DISCLAIMER

Pond-crosser is a site I recently started. Even so I can't imagine it being more applicable.

How about Germany. I'm in Berlin, although I even thought about moving to USA in the past (I also had a few decent job offers in Vally). As a side note: I'm not German.

USA looks increasingly like a place that must exist and I'll need to visit from time to time, but I'd prefer for all the conferences and everything else to be somewhere else if possible...