Sex. Feminism. BDSM. And some very, very naughty words.
Well, that pretty much sums it up for me too. So, you're not alone. Solidarity in insecurity! ; )
Isn't that the situation for pretty much everyone? The ratios differ, but the overlap is never complete (and rarely nonexistent).
Chop the whole diagram horizontally so only a single pixel of overlap remains in teh lower section. Label this 'People I know about.'