specific-question I'd guess that the use covering on Understanding equivalent condition for covering dimension is not the intended one. (Although possibly the covering tag should be removed entirely, or divided into other tags: How should questions about (various meanings of) coverings be tagged?.)

Sorry wrong room. :-(

Is the url tea.mathoverflow.net going to be changed to mathoverflow.tqft.net? I see that it has been updated on meta: url:"tea.mathoverflow.net" returns just 3 results and url:"mathoverflow.tqft.net/" returns 55 results. (Also the revision history shows recent edits by the community user.)

Interestingly, it was not changed in the FAQ post Where's the old meta?. If it is going to be changed, probably also the corresponding tag-info is worth updating.

At the moment, both version of links to tea discussions seem to be working: tea.mathoverflow.net/discussion/552/… and mathoverflow.tqft.net/discussion/552/…