Some content doesn’t work well with StumbleUpon. A hard-sell offering little introduction or supporting information will seem out of place to StumbleUpon’s community members. Remember that they’re using the service to find something new, something different. Pages that contain little more than a list of ppc or affiliate links also will not perform well.
Is it worth is to promote your site via paid inclusion on StumbleUpon? The cost is $0.05/impression. The conversion rate will obviously depend on what a conversion is for your site.
Last month, SEOmoz (naturally) shared their traffic and conversion rates from various sources, including StumbleUpon. While they received more than 55,000 visits, but only 22 conversions or 0.03% conversion rate. For SEOmoz, a conversion was registering on the blogâ€”for free.
Of all the social sites referring traffic to SEOmoz, StumbleUpon had the lowest conversion rate. If SEOmoz had garnered their SU traffic through the paid inclusion program (which I doubt), they would have paid over $2700 for 22 conversions, a lead acquisition cost of about $125.
I don’t want to come down too hard on StumbleUpon; I do enjoy using the toolbar myself. The paid inclusion program can even be a good fit for your site. If your goal is ultimately to raise site and brand awareness, SU might be a good alternative. Before you submit your site, make sure your site is StumbleUponAble