I came across a video the other day where David Frey reveals his biggest internet marketing secret. It's about "continuity" -- selling products that customers pay for repeatedly, like a monthly membership -- but there's more to it than that.

One thing you'll often hear when people talk about "membership sites" is that customers tend to stay on for an average of 3 to 4 months. Of course, that varies from site to site, but the number is so common that I suspect that a lot of membership sites have a similar average.

David's video reveals the secret to beating the average:

Ironically, it may be easier to maintain a site that that retains visitors longer (though it's harder to get it off the ground), because a membership site that provides an automated service doesn't need to have new content generated for it every month.

By the way, David Frey is one of a shrinking number of big-name internet marketers who I couldn't complain about even if I wanted to. From everything I've seen, he's an exemplary, upstanding guy who really cares about delivering honest value.