The average person has 350 Facebook friends, 200 LinkedIn connections, and follows 100 on Twitter.
(Depending on your source those figures go up and down so consider them a ballpark and not an absolute fact.)
What is the history between you and each of them?
If you reach out and ask for help with something, do they know you well enough to follow-through without asking questions?
Walt Disney once said, “Do what you do so well that people can’t resist telling others about you.”
Just because you’re connected to someone else — whether on Facebook, Twitter, or some other social networking site — doesn’t mean the other person knows you. It doesn’t mean you know them.
Think about that the next time you say yes to an invitation request. Consider writing a short note to say hi the next time their name pops on your screen.