Are there any general best practices for when a SO tag gets its own Stack Exchange? Specifically, (1) migrating questions with that tag to the new Stack Exchange, and (2) directing users to post new questions there?
Specific Instance: [Salesforce] -> salesforce.stackexchange.com
About a year ago salesforce.stackexchange.com was launched and has effectively replaced the salesforce tag on Stack Overflow. Looking at the area 51 proposal it seems reasonable to assume that most of the traffic is going there, but a lot of users are still posting to SO, and a fair number of search engine traffic goes to SO.
Are there other examples of this sort of scenario we can draw on? What was done in those cases?