It would be handy if it was searchable. I do keep Lists, like one for gardeners, one for news and interesting experts, one for really cool people whose posts I don't wanna miss etc.
I started using the profile note feature to mark hasbara accounts with "genocide apologist". I also have been using it to mark accounts "VBNMW" and um... I truly was not expecting the amount of overlap that's accumulating between those two categories.