Recently a huge amount of reopen votes appeared under the review tab, 53 to be exact. Some of these were closed as duplicates, e.g.
- Copying Greek text from notebooks as unicode
- https://mathematica.stackexchange.com/questions/11256/lost-solution-of-the-equation
- A Faster way to combine two Lists of different structures into one of a different structure
Since usually there are only a few, I was surprised about it. The review page does not help much why or by whom these are pushed now to the review queue. The only info is: "This question was edited after it was closed. Should it be reopened?" Is the mass-appearance of such reopen votes normal (e.g. every month community robots randomly push closed posts for reopen) or was it initiated by a moderator?