You got to the unsubscribe form? Every time I inadvertently follow a link to that site, I get to their "show the article then cover it in a popup demanding I register" screen, think "to hell with you" and close the tab.

Which is a pity because it seems like they have a lot of interesting content, but there's no way in hell I'm going to give them my Facebook or Google+ account to get at it, and I can't be bothered creating a new throwaway email just for them.