Don't know if this has been posted yet...
Orange and the Sun have hooked up to give you this great deal: a FREE Orange Pay as you go SIM card loaded with £100 worth of free texts for the first month.
Just fill out the form and when you get your free SIM, register it by calling 0800 079 0006 and soon you will be texting away.
-link doesn't seem to work - try this one! http://www.orange.co.uk/sun100freesim