So, both the Libraries<> and Digital Preservation<> StackExchange sites did not pass beta.

Apparently there was not enough interest (e.g. 200 vs 1,500 visits/day) and I also suspect some issues with scope (e.g. information science vs libraries vs digital preservation) and execution.

Am I the only one that feels like it is something worth revisiting?

I would think given this community's success with backchannels and communication, the concept might benefit from some code4lib incubation. Or maybe that already happened and there is just not enough interest in a Q&A site.