In regards to the OP, many years ago I managed a team of IT bods (a total of 12 at it's height, 6 by the time I left), and the "in" thing for them to do was to send emails in l33t txt spk.
After two warnings about doing so I refused to acknowledge any emails that contained such guff.
They soon realised that if they wanted me to sign off their expenses/approve leave/whatever then they had better use plain english...
Txt spk has its place, i.e. where the bandwidth is limited (100 odd characters for an SMS doesn't really let you get a complex message across), but in a "professional" workplace on email, where the charge isn't by the letter, then use plain english, I don't want to have to spend 30 minutes looking at an email to try and work out just what the hell you mean by it!