This suits me perfectly for the game project I mentioned in my last post.
It supports embedding, too! Unfortunately, WordPress.com refuses to accept the HTML-code for it – but embedding looks like this (proof-of-concept on my own testing-server). The direct link for the mind map I’m making for the game project can be found here. Really neat tool!
In fact, I like it so much that I feel prepared to pay for premium once I turn 18. I haven’t looked into the difference of Free and Premium though, and I haven’t seen the price tag either, so I’m assuming it’s realistic.