Linking social networks together

From time to time, someone will ask me about linking social media websites together to make it less work when they update them. For example, if they update Facebook, they might want to automatically update Twitter with the same information.

The Problem

I've found it quickly gets confusing when someone has LinkedIn connected to Twitter connected to Facebook, or some variation of that idea. To make matters worse, that kind of setup tends to break a lot and causes quite a bit of frustration.

It lea...