It *may* be a chance. But it's much more likely that by having a junior, less expensive employee being "able" to do the work, they remove the risk of being put over a barrel by the orignal poster of this thread when he decides to expect a return on his effort.;P Whether that is fair or not is a mute point. Maybe you shouldn't have bothered learning this important technology in the first place then your employer wouldn't have gotten one over on you? Then you'd be happy right?;) Personally I'd hand over the training. Being the only "expert" is a double-edged sword. Right now you have the knowledge and are happy with that. When you see the next great thing and want to move on you can't because your employer needs you in that role. You take your choice. I have been a developer and a manager, right now I'm back as a developer and loving it. Here we use a group blog, if we find something new out or learn a new trick we share it. We are secure that we are working for a good company and like our colleagues. Perhaps the answer to your problem is..... MOVE to an employer you like and is aligned with your ideals. However from the little you have said I feel you are the sort of guy who likes being the only guy who knows because you have gone to so much trouble to learn it. Working with people like that is incredibly hard and I don't envy the poor junior who your employer has forced upon you. Good luck anyway my friend.