hey guys, maybe you can elighten me as to what this means

I want to know if this other photographer is doing something shady :(

just checked my Google Analytics

and another photographer's referals are coming up as my referrals

what I mean is, someone's blog post, where they talk about this other photographer, came up as a referral to MY site

and also a google search for this other photographer came up as a referral

And his listing on a website where I don't advertise came up as a referral to my site

what does this mean??