Flip phones, first-generation iPods, tube TVs -- what do these things have in common? Well, for one: theyre old. Obsolete as far as technology is concerned. And, two: you probably have one or more of these things just sitting around, collecting dust and taking up space. So, in the spirit of Earth Day -- and the spring cleaning checklist, of course -- today we are talking about what to do with your old electronic stuff. 1. Recycle You cant just throw old electronics away -- you have to...