I have been trying to find a way to cross post between Twitter and Facebook. I want what I put on Twitter to also post on my Facebook timeline without me copying and pasting it there. IFTTT (if this then that) to the rescue...With IFTTT I can set up a "task" or rule to make that happen. IFTTT finds "channels" you use and lets them "talk".
What is really cool about IFTTT is that other people have already create "tasks" and I can apply them to my account with a click of a button. These are called "recipes" and are found under the "browse" link on their site. If you can't find an action ("task") already create then you can easily create your own "tasks" by setting the trigger and the following action and it's set to happen.
Check out this video and IFTTT to learn more.