I'm interested in selling information about body language online. (Probably going to be a video series of some kind.) What kind of membership site should I use? How about microcontinuity? What software should I use to run the membership?
well, it depends on your business model, if you're going to develop the series as a one time thing then you should could use a simple cart system ( whmcs, or a few ), if however you would like to do the ongoing method ( monthly, subscription based model ) then wordpress with some sort of membership script would work. Whichever the model, you should use wordpress as the front end for content management/seo reasons. Good luck with your project.