I've known online poker players who can play up to 8 at a time, just flipping around on individual windows in 1 screen. I think a lot depends on the stakes of

I've known online poker players who can play up to 8 at a time, just flipping around on individual windows in 1 screen. I think a lot depends on the stakes of the table, and the style of play. Someone playing aggressive with small stacks on moderate stakes doesn't need to pay attention to the level of someone playing with a large pile in high stakes games. Since poker is a zero sum game, many pros find it more profitable to be spread out amongst multiple games of amateurs at modest stakes, than at a high risk high stakes table. (Collecting pennies rather than fighting over dollars, or predictable farming versus unpredictable hunting)