There is one word that spells the dirty little secret of useless web traffic: Bounceback. For all the search optimization that brings your site in the first ten blue links on google, what good is a site traffic that will make a u-turn and go away?
Let's declare a war on clever schemes that bring u-turn traffic to web sites. We want engagement and stickiness - visitors must stay on site and interact meaninfully with the site. That should be our goal.