Free Comic Book Day

This last weekend has seen Free Comic Book Day in the US. I must confess, I never am quite sure how it works in the UK. I am assuming the Free Comics will ship with this weeks books, i.e. Thursday 6th. Looking at the titles, there are quite a few that look decent. I reckon I will check out War of The Supermen. I don't normally go for Superman comics, but I do like the look of this and I do enjoy James Robinson's work.