Re: WTF is GiffGaff
People want it because it's cheap. £10 a month covers all my phone and data usage. You can set the goodybag to automatic and auto top up for your credit, so it becomes like having a contact with no minimum term and no notice period.
The network is quite unreliable and the website extremely unreliable but it works well enough for the money I pay. It helps if you have a few people you contact regularly using the service as it costs you nothing to call or text them. It's a great network for groups of kids, if they all get their friends to join each one gets £5 credit and they only have to top up £5 every three months to talk to each other for free.