In a previous post I admitted to using YouTube videos to help in the decision to take or avoid a workshop with a visiting instructor. I recently realized however that I was judging based on their performance videos and that what they actually worked on with students might be very different. For example, when Andres Amarilla was in town I saw from his performance vids that he danced nuevo in an open hold, not my interest - so I made other plans. I did, however, go to a premilonga class that he gave. He and his partner focused on technique, adding a little extra bouncy feeling of energy to an Ocho Cortado, taught in a salon style close embrace. Glad I went, I gained from it. Other visiting performers do spectacular choreographed performances, but stress technique, lead & follow in their workshops. To what extent do you feel you can rely on performance videos to judge what you can expect from a workshop? Can you judge what performers teach to social dancers by You Tube performances?