Bounce Rates?

Obviously a site is not going to have a 0% bounce rate, but I just got thinking about my bounce rate. What is a decent bounce rate and what is considered a high bounce rate? I have services where everything is typically done on the home page, so I'm guessing that increased my bounce rate significantly, since people just do what they need to and then leave.

 

I´m not sure about this really, but I guess it really depends where the traffic is coming from, traffic from stumbleuppon tends to have a very high bounce rate, as opposed to the traffic you get from targeted advertising like adwords which should have lower bounce rates, a lot lower, then there´s the direct traffic that should have even lower bounce rates.

Combining everything, my site has about a 35% bounce rate.

 

I'm seeing like a 55%-65% bounce rate on one of my sites, but I'm guessing it could be because almost everything is done on my index page. Even form submits are posted back to the index page.