Removing stuck or seized seatpost?

[]Strip out the bottom bracket
[]Put the frame upside down
[]Pour in 1/2 litre of coca cola (full fat, regular stuff)
[]Leave for a day or two
[]Drain the coke out of the frame (put it the right way up)
[]Pull the seat post out (it will still be tight, but it won't be bonded anymore)

pre oil price rise my diesel option was cheaper. and less vegan.

( i had to edit out tynan type obscenities here, I've been here too long, or haven't worn the bear suit for a while)