There are 198 topics in ideas at the moment. Of these half (99) are from 2017 (5), 2018 (20), 2019 (35) and 2020 (39).
There are some ideas closed but still present, they were closed mostly because of wandering of the original idea.
There are plenty with hardly any replies, and some with many. For example the second most views (5,700) and 11th most replies, created November 2019 and last post December 2019 at "As at" on balance sheet - #34 by anon5385611 got an elegant fix proposed by @Lubos but kept arguing about correctness of using As at vs At on vs At of, and remains open.
So why not tidy this up, put them to rest one way or another?