i have no idea what is going on here, but this tickles the hell out of me.

here is a link to the last craig's list listing
http://newyork.craigslist.org/brk/bik/69134475.html

but you may want to go the first one today, entitled road and mountain bike parts and follow the progression.
http://newyork.craigslist.org/bik/

i honestly can't figure out what is really going on.