By now you have probably heard of influencers, that group of internet-famous people who have more than a million social media followers and can make big money by plugging various brands. And you may have even heard of microinfluencers, who do the same thing for a still sizable but somewhat smaller social media audience — from the tens to low hundreds of thousands.

Now get ready for the nanoinfluencers.

That is the term (“nanos” for short) used by companies to describe people who have as few as 1,000 followers and are willing to advertise products on social media.

Their lack of fame is one of the qualities that make them approachable. When they recommend a shampoo or a lotion or a furniture brand on Instagram, their word seems as genuine as advice from a friend.

Brands enjoy working with them partly because they are easy to deal with. In exchange for free products or a small commission, nanos typically say whatever companies tell them to.