tedster - 3:40 am on Oct 11, 2012 (gmt 0)
To do good analysis on your own bounce rate, your really do need to do something to filter out a bit of the noisiness in this metric - at least in its raw state. Google also knows this. The evidence? They even created a tool you can use with Google Analytics to filter out pages with a long time-on-page, and you set the threshold to suit your own analysis.
See Tracking Adjusted Bounce Rate In Google Analytics [analytics.blogspot.com]