T-Stringwrote a review of GoPro Handlebar Seatpost Mount on August 29, 2010
The mount is just fine in my opinion. I used it on my handle bars and it seemed solid. The start of my ride was very bumpy. Within the first 2 minutes of riding, the camera was angled straight down. It may stay in place if I use pliers to really crank it down. I think I am just going to get the chest mount for my rides.