We just stick them in our garage. It is getting full.
Good grief! I just went to double check San Diego County for information on their free recycling program, and found there's one this Saturday to benefit Soroptimist's International and they will take everything and anything considered eWaste.
Even better, it's very close to our home and includes "Assured Data Destruction" with Proof of Destruction.
Doesn't do much for the developing world, but:
http://www.youtube.com/watch?v=j1_uvM-5xKs