I just bought a 1999 Lemond Zurich frame on ebay. Butted Pro 853. I'm going to be selling my 1979 Paramount after I pull all the parts off it (I'm selling the parts, too). Point is, ebay can help.

But I'd say:
1) If its funky but not a very suitable bike for you and not too collectible (e.g Schwinn Varsity from 1973), sell it to a local restaurant as decoration, or toss it.
2) If its a pretty good frame, sell it on ebay.
3) If its neither funky nor good, scrap it.