I have a friend. Let's call him "Ike."
Every now and then he sends me links to things he's just discovered and tells me I should check it out. While it's appreciated, it's almost always things I've already seen either on Twitter or Facebook - last week! Now, that doesn't seem like a long time, but it is just long enough for the things he shares with me to be old news.
Ike refuses to get on Facebook or any social network for that matter. It's fine, social networks aren't for everyone. I get that. It's just a really useful communication tool for me and life is a little easier with it around. At the very least, I don't find things out a week after everyone else does.