Yeah, it's kind of concerning that an article about essentially black-hat behavior is earning so much praise in the comments. You have to remember that this kind of thing put a huge strain on Jagex when they had to (and still do) spend resources fighting against bots and gold sellers rather than development of the game.
And in fact the difficulty of dealing with this problem led to the update which restricted free trade and did a great deal of damage to the game and the people who played it.