Well, I came here because most of you league guys switched to bk due to the deactivation of the discussion boards on IYT. Since then it has become very "unchallenging" on IYT. It took me some time to ease into the purely technical interface here, as well.
Meanwhile, I see no reason to switch back anymore neither to play on both sites.

That said, let's see IYT as kind of a bootcamp!
And if a new talent is ready to challenge the 20 world champs, BK is the place to be. ;-)