The second attempt to launch an Economics.SE site has gone into public Beta.
On-topic there are of course Econometrics also, so if you hit on an econometric question on Cross Validated that rests unanswered, you may consider flagging it for migration, or alert the OP about the existence of Economics.SE.
I will check older CV unanswered questions with the tag "econometrics", with the same intent.
If the site stays on, perhaps it will become a new source of cross-posting, but we will have to wait and see.