For me, if you (or anyone) shared your personal life into social media it means you want me to know what you want me to know, and I don't need to feel guilty for stalking you right? Also you can't call me as a stalker, however, it's YOU whom shared yours by yourself.
I'd like to stalking people by their social media such as Instagram or blog because I could know somebody personality by seen and reed theirs.
Beside that I don't want to miss a things, I need to update my brain database. How could I meet my friend in a public without none knowing, such as asking about her (last) boyfriend while I don't know she is had a new one, or asking about her (last) job while I don't know that she is unemployed, for me that things is matter...
In a book I reed (and I forgot what the tittle is) there is a (interesting) theory of a relationships connections. He (also, I forgot this one) says "People was connected", you know what? I believed him. His research of a little town relationships connections brought him into the ultimate things, everybody knew each other.
For example (it's just an example, not the fact) : My ex boyfriend had a close friend, that close friend is siblings with a man which is her girlfriend got bullied by me. That close friend had a friend which is had a sibling whom getting married with my rival. Then, my rival is had a sibling whom dating my ex boyfriend close friend.
So, it's called by the power of stalking.
That's why I'm in love with.