StumbleUpon is a browser plug-in that randomly sends people to different websites based upon other sites they like. Its kind of like channel surfing on TV with thousands and thousands of channels instead of a few hundred.

Early this week I added one of my sites to StumbleUpon, so far its sent a few thousands referals. Yes, they click on ads. Not bad at all.

One important tip: if your site is garbage don’t bother. Out of three sites I’ve done this to, two got a little under 100 referals the first day and nothing more than a tiny trickle since. Neither of the two sites were bad, just not cool enough to hold people’s interest.