After spending more than three years on developing the product, this task was overdue. It took me so long as I build the editor - the core of MonsterWriter - with the requirement in mind to be able to work on the same document with more than one user at the same time.
Still there are more than 50 known bugs in the app and is was hard to take the decision to give it to other people. On the other way I was nervous spending more time without real user feedback.