If you click the last of the weird (and, imo, quite visually displeasing) yellow tab thingies, close to the scribbled-over piece of text, it says "You didn't think we'd give away our teammate's contact info so easily! [...]".
I interpreted this to mean that the guy who wrote the letter got hired by the ones who received it.
Post-GOOG Edit: http://twitter.com/#!/onyxfish says, "Happy you all are enjoying it--even more happy it got me the job!"