Look up what a bot is, esp. if this "someone" is from New York, Pal Alto, Kiez, Germany and a few other places. As far as non followers looking at our images, I'd guess a small percentage of folks actually "follow" someone and an even small percentages of those are potential buyers. Most of them are probably fellow FAA members.
As far as bots, be glad you are getting them as a new member. They will eventually begin helping potential buyers find you.