Should you start an online business? Probably not.

That is unless you have one very specific skill.

Niel Malan takes a look at six types of online selling businesses, and how to differentiate between the models that will leave you frustrated and empty-handed, and the one(s) that will actually give you everything that you're looking for.

He also identified the common challenge that all these models have, and shares the one skill you need to be successful in online selling.