brinked - 9:32 pm on Feb 11, 2012 (gmt 0)
This all depends on the content and the purpose of the content.
Sometimes someone can land on a page, get what they wanted in 5 seconds and then leave. In some cases, a high bounce rate is a good indication that the user found what they were looking for without having to dig any deeper.
It also depends on the content and the way the content is presented. If a site has its content in flash/ajax/iframe, they can browse and browse but in the eyes of tracking systems they will only really ever view just 1 page.