I am looking for ways to increase my relevant traffic to my sites and one of the ways I’m trying is the Stumbleupon.com advertising. This advertising cost .05 cent per page view and brings up your entire site. I dropped $50.00 buck into it and added a couple of my sites to the campaign. I did start to see the increase in traffic once the site was registered but the capture rate is not really good enough for me to keep the ads running. Now the issue as I see it is that because the categories that you can list your site under are so general that when they hit your site it is very likely that it is not what they are really interested in. This causes them to just stumble on past it with out any capture. If you have a site that maps directly to a listed Categories you may do better than my sites. I am adding a different site to the campaign that fits the categories better to see if I get better results. As with any ad campaign that you do it is most important that when your visitor gets to your site that it is relevant to what they though they were clicking on.