I think your right about the sound quality thing. Unfortunately, I have no means with which to record sound, so I only poste stuff like theory. Incedently, my tricks have gotten high ratings. I even did one on getting over stage fright.
If your shooting for high ratings, make sure you know what your talking about, especially if your sound quality is bad (or non existent) cause then people might go like, "Hmmm, this guy knows what he's talking about."