A friend of mine had her Facebook account disabled because she wasn't using her real name (as an aside, while I understand the real name policy, sometimes it's a pain) so I followed her to Instagram, setting up an account there, because I didn't want to lose touch with her.
I'd never been on Instagram or spent much time there but once I got there I figured I should post some pictures and get involved, kind of. Pretty much all my pictures are of Gozer looking cute (which I think is all the time, although Ian says I see her through a mommy filter). I tell you, the first time I got likes from people I didn't know I really understood the appeal of social media. All I have to do is use hashtags that people follow and they look - and sometimes like - my photos. I can be part of a community.
Instagram isn't like Facebook, in that you don't have to know someone to like their photos or vice versa. Of course you can follow people, and they can follow you, but things don't have to work this way.
I realize that for almost everyone this is not a new concept but it was new for me. Odd, I know. I don't post a lot but I'm enjoying the thrill of connecting with people I don't know.