http://community.giffgaff.com/t5/Contribute-Innovation-Promo...
Edit
By the way £10 per month for 2 years is £240
Outage information (in addition to the O2 problem): http://www.theregister.co.uk/2012/03/16/giffgaff_down_again/ http://www.theregister.co.uk/2012/01/19/giffgaff_outage/
£10 goodybag (change) 250 UK Minutes Unlimited UK texts 1GB Mobile Internet (Tethering will be allowed)
or
£12 goodybag (new) 250 UK Minutes Unlimited UK texts Unlimited Mobile Internet (Tethering will not be allowed)
Not as brilliant as they were, but still not bad. The only outage I saw was the o2 outage - was there others?
EDIT: just spotted their earlier one caused by the burst water pipe. Interesting how they spin the outage, as 'too expensive to prevent': http://crave.cnet.co.uk/mobiles/giffgaff-outage-too-expensiv...
In the UK you should check out http://giffgaff.com/ - £10 a month for unlimited internet, unlimited SMS and 250 minutes of calls (mobile or landland, and free to other GiffGaff numbers) - not a bad deal at all. Runs on the o2 network, so pretty reliable.
£120 for 2 years is an amazing deal, and if you can buy your iphone 5 (or other mobile) on an interest free credit card, then you can make a very nice saving - £649 for 2 years service and the 16g iphone 5 (£529 from Apple).
My girlfriend just did this, but is paying off the phone at £50 a month (on a 0% card) so will be clear in 10 months, with just £10 a month to pay.
Also, it's just a rolling 30 day notice period - no 2 year contract.