I never quite get selling a car on a forum thats dedicated to it, surely 90% of the people have/had a mk5gti so wont be looking for one?
(I know its slightly different as its an eddy)
Get it up on pistonheads/autotrader. I never joined hear to find one, i scouted all websites including vw's used cars (where i found mine)
IMO you'll have better luck elsewhere, but welcome along, until ofcourse you car sells.