I read both the new trailhead and the original article discussing the 1.3 million statistic, but I fail to see the difference between "primary or secondary source of income" and "making a living," which seems to me to be little more than shorthand for the former. The original article also leaves out the slightly important detail of how many people are each type of "power seller". If anyone could parse it further for me, that would be great.

"Making a living" means that someone makes enough from that one job to live off of.

"Secondary source of income" means extra money, not necessarily anywhere close to enough to live off of.

"Primary source of income" might mean someone is making enough to live off of, or it might mean that it isn't enough and they had to get a second job.

In other words, "Making a living" means all 1.3 million make enough to live off of just e-Bay. "Primary or secondary source of income" means that 1.3 million people are making a significant amount off of e-Bay, but only some of them are making enough to live off of and others aren't even making half of what they need.

Lukebn -

The terms are just what they imply: Primary source of income means the main income or the main job and source of income - usually from one or both spouses. Secondary income could include a second job, the income from a spouse's part time job or even additional income from a hobby, etc. Making a living is a term for working, going out there and making money to care for yourself and family.