I've noticed that a main problem with getting people to join GiffGaff is that some people like Contract, it what they know and serves them just fine..
Surely A GiffGaff Contract would be the best thing since Sliced bread - obviously with the option of Pay as you go... still get points etc. for reffering somone did GiffGaff Contract. and If buying in Bulk GiffGaff could get the phones for a good price. ???