LOL, maybe not the best way to keep her as your girlfriend?
I had the rezound and went to the Dinc 4G, paying the full $500 to get it, and I haven't looked back. The form factor makes a huge difference.
For the OP, why does it matter whether the forums are active? Does your wife care? Does she have an account here or an interest in rooting her phone? From what I can tell, the most active forums are the ones where people are complaining the most. There's not much to complain about with the Dinc 4G. Quiet forums are GOOD sign.
As to how it's selling, the Verizon stores I talked to when I got mine two weeks ago couldn't keep them in stock. They were getting in phones on a daily basis and selling out each day. But again, not sure why it matters.