Heh, mastermoo's is the most amusing, but these are pretty useful. I don't think a lot of beginners actually follow any sort of guidelines when it comes to this, and just sorta toss some numbers and dots in every now and then to make it look professional.
I use the same format that Falcon stated, it works the best for me. If I use any less/more numbers I completely throw myself off and just end up switching back to this format.