Question Purpose of Follow?

[WildSpider]

I have several people that I'm following and I've noticed that it will tell me on the Home Page who of the ones I follow, is online right now. Is this the main purpose of "Follow" or is there more functionality that I haven't noticed? Thanks in advance!

 

[tewebag]

You can go to your "news feed" and see everything the people you follow have liked or posted. Just a easy way to stalk someone you like.