Freakin A!
(http://www3.tky.3web.ne.jp/~edjacob/j-study%20issue.htm)
'Ninety percent of the time, the words “language exchange” are a codeword for dating, and you have a far better chance of ending up in a relationship than you do of ever learning Japanese this way.'
No wonder... Well, guess I'll be using this thread instead.