We are terribly sorry for being a little bit silent for a while, but this was for a reason. We have just released a brand new feature many of our users asked before: cross-topic links! Yes you can now put links between different topics in your maps and visually connect the related topics from different branches.
Additionally, two new export formats are ready: SVG (Scalable Vector Graphics) and (as many people asked) PDF! The last one was asked particularly often and we are sure will be of great value for our users.
There are lots of other improvements you might have noticed already, and a lot of new cool stuff in the works. We hope you would keep enjoying our service in 2010 and onwards.