I just got one, it seems to be a good solution to display my medium to long term todo lists (whereas for short term reminders, timed phone notifications seem to be the most effective solution).
Currently I'm using text files or reminder apps, and I have to close and reopen these windows all the time, and they only exist on my pc, so psychologically they aren't effective as constant reminders.
A simple piece of paper also isn't effective because it's too boring, being static, it doesn't change by itself since it's not programmable, so it doesn't capture my attention every day.
Plebscan