http://www.dabbleboard.com/pro
We'll be sending the mass email soon, but I wanted to tell you all first. (Dabbleboard had also launched on HN first.) We'd appreciate any feedback about free versus Pro differentiation, pricing, promotion, or anything else.
Happy new year!
I know that this has been a work in progress for a while. It's good to see you roll out the premium version. I hope it takes off.