By OTB chess, I didn't mean exclusively going to tournaments (although I think it helps a lot), but basically playing in a real-life environement (which includes club play) rather than online, because the level of dedication is much higher and the emotional involvment ensures better learning, not to mention extra motivation and free lessons from other OTB club players which can save a lot of time.
I think it's difficult (not impossible but...) to become a good player by playing exlusively online.
I think it's difficult (not impossible but...) to become a good player by playing exlusively online.