I'm going to check out a frame advertised on craigslist. The ad and my subsequent email convos with the advertiser hasn't given me much info except that it is the right size, is a road frame, is made from easton aluminum, and was at one point been attached to a bike by KHS. I like it because it's aluminum, relatively new (5 yrs old), comes with a fork and headset, and well priced ($80). I had a terribly hard time finding any acceptable frames on CL or ebay; everyone seems to think that their old, neglected, 2 ton bike can be sold as *vintage*. My question is: is there anything I can look for when I go that can tell me whether or not my money is being well spent? What I mean is, as there is so little information on the frame, are there any visible indicators of a good frame? Obviously I can look for dings and scratches, check to see if the bottom bracket threads are in good shape, etc, but apart from that I have no idea what to look for.