I've heard about this CMS long ago and wanted to buy it and then I've noticed it's now released as open source - boy I was happy. It's simple, flexible, and as developers say it will be extensible too in future. I've never seen such a brilliant CMS. It is great for small to middle sized websites, not for huge ones though, because navigating pages may be difficult for such sites. I hope they will work on that too and make it the best in it's class!