I use a bunch of abbreviations when I take notes - app, info, hw, sw. When I spell check notes, I usually have to take a minute to manually find and replace them to expand them into real English. Word 2007 has a nice new feature in the full spelling dialog (as opposed to the red underline check as you go). If I type in a correction that's not on the list of suggestions, next time it finds what I've corrected Word will now offer what I typed in as the first option on the list, saving me a huge amount of time - and it's much less likely to go wrong than hitting Change All. I also like the contextual checking; it can suggest that when I typed crated I really meant created and have a good chance of being right.