Factor, at least your username has something to do with your job, so it's not too much of an abberation. Those interactive white boards can be a real pain.
No problem grasscarp- I thought it might be a Freudian slip as a few posters have suggested desktop is really me.
As for the classroom, I would never use AB at school, and never mention it to anyone. (That reminds me- at one school I did see another teacher on AB in the staffroom noting down some crossword answers and often wonder if he was just 'looking in' or was one of our regular contributors)