It turns out that this bug (it is not using any trainer, you just do like in the time of the old wood bug...it's similar) is a real two-edged sword.
First, one must at least play medium resources with it.
Second, it fails often (one must have enough lag for it to work and a sure hand), leaving him with no resources to continue.
Third one is no good a player if needing to use this.
One night I played with a guy (he was hosting) that used this (he's the one who taght me about the bug). Well, he did it well, but heck, I had to bail him out a few times from trouble (and everyone here knows how slow I am).
It really would work well in the hands of someone very fast in high resources - because having the vills in 10 seconds rather than 20 means having a lot of guys gathering resources BEFORE you get to get them.... The only point in this "bug-exploiting strategy" is to get a head-start with resources to either boom more powerfully or Tool / Bronze faster.
I knew very few people that were able to make this work - and believe me, they would not have needed this to win...
All in all, a very lame exploitation of a bug, because it effectivelly leads to unethical advantage in a crucial phase of the game (the opening).
It is of no interest and quite disappointing to keep meeting people that try to take such mean advantages. I reccommend one not to play with them.
Note, however, that I have nothing against the farm bug - because it really comes into play when the game is quite advanced and so the advantage is not really decisive - everybody can have it and it means nothing by itself. In contrast, bugs like the "wood-bug" and the Villagers from houses, as well as the 2-TC in high resource games in RoR are really mean things to do and quite lame, since they defeat the game completely. In Warcraft 2 there were a few bugs related to wood chopping that were customarily used by
everybody and I think that the farm bug falls in the same category. However, any bug exploitation that leads to early advantage in the game is, IMO, plain cheating. In this game, "early" means "decisive", so it must be out.