The Internet is positively riddled with traffic generators. They range from low-quality autorefresh bots using proxies to appear as though they come from around the world, to sophisticated traffic exchange systems powered by real people and real advertising. Ideally, you’ll strike upon the most valuable of these networks when you’re searching, but there’s a few problems.
The simplest explanation for a sudden and unexpected drop in website performance is often analytics tags failing to fire. Always check tracking first to make sure website visitors are being accounted for before making drastic changes. Reconciling tracking issues will help mitigate the long-term impact. Additionally, making friends with your IT department will help avoid issues before they arise. - Nina Hale, Nina Hale / Performance Digital
The third criterion is derived from the behavior of the users of the site, which becomes more complex as the user rates more and more websites. Until you have tried StumbleUpon and experienced what the website has to offer, it is hard to figure out what it does and what are its benefits. Suffice it to say that being an active member of StumbleUpon may gain you more targeted traffic to your website.