Yeah, i see it, but don't know why. May be i am interesting in sport, blood and aging medicine? Guess, he added me in his upvote list. Also i know, that he read all comments attentive in his page. For example, when he asked to help him to develop eSteem application and to write some filters, so he kept all ideas. He is a developer and looks at world with his side and want to know peoples whishes. Every information and people we gather with a bit steps and he does the same. But he doesn't add me, just upvote some posts and some comments.