I wasn't going to post my numbers, but someone in the know asked me to, so . . . (deep breath) . . .
An ex-FB decided to count once, and lost count at 130 in a couple of hours.
With my current (and favourite) FB it's almost continual. For me it's the mindfuck, more than anything else, that pushes me beyond what's normal for me (the kind of numbers my ex-FB counted).