This may be stupid to you, but I've been playing a long time and during that time, I've seen it and and been told by some poker players who made a small income from doing it. Pro poker players are not just the ones that play big tourneys, and big cash games. I have found that there are pro players at every level. If a player can crush 2nl 80% of the time, and moves up to 5nl, that player is a pro at 2nl, and right on up. When I was at 10nl, I noticed these two players that played that level all the time and they won good every day. So I asked them both why didn't they move up to 25nl. They told me that they could win all they needed playing at those tables. They were pros at 10nl and they preyed on weak players just like any pro will do