Can someone explain to me how the swaps work?

[Enid]

And could we have a sticky or FAQ for newcomers, ta

[misdee]

you sign up to the swap, enail your details by the deadline, you get sent a parcel from a mystery mumsnetter and you send one out to the person assigned to you. its great fun.

i got a box of blue goodies this week, and am going to post a parcel off today.