After a click on a Tweet-button, the tweet
macro suggests a text to tweet. The next click opens Twitter and hands
over the text to tweet.
There is some additional info on the history and the solution here: http://twitter.com/BeaBonobo/status/812272527854673920
If anyone has the time to adapt for other networks*, feel free and ask me, if you need support!
*Networks: see http://twitter.com/BeaBonobo/status/812271169198034944