The word drive at the Simple English Wiktionary that I announced a month ago has been successful. We reached our 2000-word target a few days before the Aug. 4 deadline. Then an editor deleted a number of spurious entries which dropped us down below the 2000 mark again. By August 4th, however, we were back above it.
This seems to have created some momentum which I hope will continue. I would encourage anyone else with any interest to contribute. Also, please point it out to ESL learners you may know.