There are a few steps for this deal, so please read:
1) Crowdity are currently doing a deal for a FREE £15 Red Letter Day voucher (2 days remaining to sign up). http://www.crowdity.com/index.php?m=3
2) Register your interest for the voucher & once 1000 people marked has been reached & the deal goes 'live' you will receive the voucher in your Crowdity account. Print the voucher.
Order Paintballing which is £10
4) The voucher can only be used after 31 Jan & MUST be used before 14th February 2011
I think this will work- but don't forget the voucher can only be redeemed after 31st January but needs to be used by 14th February
(I noticed this deal after 'razam' posted the frre krispy kreme doughnuts deal)