I really like that crafting/gathering is easy to get into and is rewarding, much more so than other MMO's I've played. But if someone goes crazy with botting he can have a really negative impact. I know some people on my server who run gathering bots, they are always online regardless of time of day and flood the market. Whether they just sit on hundreds of millions of gil or sell it, they make gathering less rewarding for a large number of gamers.