Leo boosted you up with his recommendation of your post in this thread. Like I said; it's real time. If people don't get recommended for a period of time, they drop down the list; likewise, if more people get recommended, they go up the list (knocking people down as they go up).
You can expect the most recommended today to change frequently, but the other two should stay the same for longer
You can expect the most recommended today to change frequently, but the other two should stay the same for longer