Well I’m not really sure if the word sexy and “metric” really go together… But at least it may have caught your attention by putting the words together.
What the hell is “bounce rate”… Well its the single measurement that tells you weather people are actually staying on your website/blog or leaving instantly.
As you can probably piece together, having a high percentage of “bounces” means that you’re doing something wrong somewhere with your site [ie. the wrong people are finding your site, or it's not what they were expecting].
I mention this because many people I talk with associate a busy website with a good website, while in fact they differ quite a bit.
WIth the bounce rate metric you can see AT A GLANCE if the traffic is actually really finding something interesting or if they are just lost.

