Can't say I'm a fan. Seemed to come past my place in Borough relatively regularly in the past (or at least something similar- bunch of bikes and boards with trailers and music etc.) I came across it once when I was on my bike on my way back into the flat, trying to go across Southwark Bridge Road. The fact that they "cork" the roads on the sides, irrelevant of lights aggravated me as I was trying to get in quickly to get out again. Yeah, it was only five minutes or so, but five minutes that I did not *choose* to wait. The whole justification of car drivers blocking the road the rest of the time is dumb since they don't stream through red lights saying "just wait, I'm having some fun."
If this is coming from a cyclist then you can understand why motorists with an already less-than-positive opinion of cyclists are going to go away from it even more negative. Granted, the times people need to wait are small in the grand scheme of life but the point is that it's enforced by what is effectively illegal behavior... Maybe Critical mass is not what I saw and they do stop for lights etc... Will watch the vids later.