I love the ones that give you almost enough detail... Either one in this ad would have been considered, but when I sent an email to ask about size, after a week discovered that they are both too small (54's I think)

http://allentown.craigslist.org/bik/127157410.html

But my favorites are the ones that give you no information, I tried to find one I saw in the past few months that said nothing about the bike except it was red... This one is just as good:

http://harrisburg.craigslist.org/bik/128553452.html