I think it would be nice to give yourself a little traning for those specific words that you don't spell right all the time. ie.. correct the mistake that you had learnt long time back, especially when your list is small.? The advantage is that when you have to work in the environment, when your spell checker is not available, you should be ok.

Another advantage is that we can extend to the spoken version ie.. miss-intended words/phrases can be corrected :-)