[El_Hombre_Grande]

Many of the posters here are responding as though anecdotal rumor trumps math. It doesn't. Undoubtedly Pzhon is correct. The real answer is a) bankroll requirements assume that you are a winning player (a dubious assumption for most) and b) the amount of a sufficient bankroll depends on a number of interrelated factors: your proven winrate, standard deviation, and tolerance for risk.

I would agree that the FAQ could be more much more "correct" by explaining this analysis. But I think it would be a shame also if a newbie couldn't leave the FAQ with a reasonably solid and useful answer as opposed to a "it depends." If all its going to do is theorize, its not really a useful FAQ. 20 is in some sense "wrong," as Pzhon points out, but its not nearly as "wrong" as many of the ideas that can float around in a newbie's head.