You can put that clause in your license! Something like:

  If you use this software in a commercial product, you are required to
  make an attempt to send me an e-mail letting me know about it, 
  because it's just nice to know.

Of course that would piss off the lawyers because now if a developer uses your software and doesn't e-mail you, you could sue them. But it's not like big companies always respect licenses anyway :)