There are decent prizes up for grabs including a VIP ticket to TechEd, a brand new tablet PC.

Browse to http://www.microsoft.com/emea/gatekeepertest to join the Europe-wide competition. Even if you don't think you know a great deal about security it's fun to join in and see how well you do against your peers. The competition is free to enter and only requires you to answer a couple of questions per day.