A good case for telepathy not existing: If it did, google would patent it, read my thoughts, and advertise exactly what I'm interested in.
Perhaps they already know you won't be buying anything anyway. :-)
As St0nes pointed out, it is in a sense not really a fail, since Google correctly picked up on the subject matter. Perhaps the software will soon be sophisticated enough not to fail at perceiving which side of the debate the recipient is on.
Anyway, I found the whole thing amusing rather than annoying.