VERY late on this, shows perhaps the interest there-in . . . .
But then: I view the sticky-column as a library which might/should be noticed by all new-comers and whoever wants to renew himself on something basic, as in a 'Library'. One certainly does not read every book so often, but books contain information that might be indispensable on occasion.
Question: Does the column use space which might otherwise be useful elsewhere? I think not. So what is the objection? "When it served its purpose . . . " it should be about subject matter which has never 'served its purpose', in the sense that at least all newcomers 'should' read it as background which they otherwise might have missed. In my own field: '100 valve amplifiers' would certainly be of interest to all valve lovers, which otherwise they may never have seen. (I myself have recently reread it just for relaxation.)
The column is/should then not be a 'notice board', rather a library, as said.
