Sounds like a good idea! One thing I'd suggest is (quality) posts that get a lot of merits - for example: top merited post for that week - and threads that get a lot of traction maybe ones that get a lot of heavy discussion and interaction too rather than number of replies (like the weight of the posts in a topic).

Theymos suggested doing news stuff on that topic and I'd be interested in trying to make stories neutral and accurate if you needed the help... I think I'm a bit crypto-skeptic when it comes to things like ICOs and altcoins.