isonoob

I think a discussion about the activation would actually be pretty on-topic... Also, it is indeed not locked to a single machine, I have a MacBook Pro and a Lenovo Y580 (Windows), both of which have been activated without issue. I did try activating on a third machine, however, the limit is 2, not one machine.

+1, I have a few machines I run it on. It definitely does imo have a learning curve but is more customizable than slic3r or cura, not to mention faster. also the supports are very easy to remove.