Ah, good question! That’s my term for one of the metrics that @galtsubery’s beemind.me has: the sum of the ages of a set of to-dos or messages or whatever else you need to deal with. The main thing I’m neglect-minding these days is my Pocket queue.
Quoting myself from another thread:
I love Trello’s feature (what they call a Power-Up, that you have to enable for each Trello board) of fading out neglected cards. Combined with the neglect-minding feature of beemind.me it’s working nicely for me as a way to force myself to revisit to-do items and avoid cruft and task-starvation.
There’s lots of nitty-gritty about it in a long forum thread about beemind.me.