The simple, fast, elegant way it works means that everything else I touch seems somewhat clunky by comparison. My moderator team and I get more done in less time than we ever used to; I haven't had a single complaint from the 20,000+ members I moved over to XF last year; the post count curve at my main site has spiked upward; the template system is a breeze to work with; the add-on system is equally easy to use; and XF has inspired me to branch out and create a network of sites and set a goal of running forums for a living in a few years time!!
Mike, Ashley, Kier - you've created something truly unique that has such great potential - I hope you can weather the storm and come out the other side in a position to make XF a world-beating online community solution.
Thanks for a great product - and here's to the future of XF