something must be doneWhy, exactly?I've seen many people say this, but no real concrete reason as to why.
edit - though annoying, there's nothing wrong with this tactic, as they are just finding undervalued players.
Here's how:-The more people who participate in a market, the more likely it will be to arrive at a an agreed upon value for a player-Daytraders find players who are undervalued by the market and sell them at market price, plugging a hole in the market for that particular skillset and timeframe-The more daytraders you have, the less likely each one can find undervalued players-If no players are undervalued (or overvalued), the the market has reached equilibrium for a particular skillset and timeframe-When a market reaches equilibrium, it's less risky for everyone trying to buy and sell because there is less uncertainty about what they can get for a certain price-Thus, for people who run the standard training and selling regimen, they will have a better idea of what their trained players will sell for than if the market were not at equilibrium.