I have done a couple tests and it seems to work fairly ok. Things I've noticed: Use different copy then you use on your other social networks because it is a different audience. Also use images, they increase your chances of getting people to act on your tweet. Also heard that if you ask people to retweet with '#RETWEET,' it increases your chances of getting one by like 100%. Haven't tried this yet though. But I wanted to know, has anybody else used them?