Auto-billing trap!!! Not worth the money!
These guys lure you in, with the promise of many useful and helpful services and articles, but there is nothing special. Most of the articles and discounts offered are found elsewhere on the net.
I had problems cancelling via their website (all verified in a back and forth email chain); thought it was sorted then realized it wasn't so I contacted them directly with about 24 days until my membership ended. I was told that if you don't cancel their service within 30 days of renewal, they auto-bill you for another year. Niet doen dus! Je krijgt weinig voor €50 per jaar (€100 in dit geval).
Update: I'd like to add that I spoke directly with owner Martijn P. who played the "sorry we can't cancel because our billing system won't allow it" routine. All of this with more than ample time before the subscription ended, mind you.
These actions speak for themselves. Let goed op.