ates, I'm afraid some folks around here are rather dismissive of anything that's older than six weeks and overclocked to the point of meltdown. What may be worthless to them is someone's lifesaving PC if they can't afford something better so either hang on to it and use it to back up everything on your laptop once a week or hand it in to a charity shop which can find a decent home for it.
No disrespect intended to c12friedman but his Member Configuration says more than I can. 😀 In the real world in the middle of a slump, a Pentium D still has a long and useful life ahead of it, if not a huge monetary value.