What have you done with your old cell phones (and by old, I don't mean one like 4-5 years ago or whatever). I mean if you recently upgraded and your "old" phone could still be considered a bit current.
I've seen sites where you can sell them, or some people go to Craigslist, dump them at some place like Best Buy. I saw that Amazon also offers credit or whatever. Some people donate them to battered women's shelters or given them to their kids, etc.
The wife and I are about to upgrade ours and they're about a year old.
Don't like the idea of dumping them in those bins at Best Buy 'cos I know they're gonna refurbish it and sell it or do something else to make money off of it.