I got myself the PDF version of the Lamentations Of The Flame Princess Weird Fantasy RPG today. I've been browsing through and jumping from section to section today here's a very brief review.
The rules in general are clear and explained well. The Referee book is very good and a top notch addition to old school gaming. The magic rules for spell research and manufacture of common magical goods are clearly spelled out with a random element that keeps things like scroll creation from being a fixed and well defined science. Alignments as explained in LOTFPWFRPG make sense and can't help but work in the context they are presented. Combat is simple with just a little bit of defined tactical variation. The nice and simply d6 based resolution for a lot of stuff is familiar and easy to follow. Encumbrance has some simple and playable crunch. The language rules are simple,playable and nothing I've seen before. Lamentations of the Flame Princess Weird Fantasy RPG has one of the absolute best Character sheets I've ever seen with an RPG; it's clear, well laid out and innovative.
There's a lot more I could say but that should follow a careful read and maybe some game play. All in all it's a solid addition to RPG land that covers familiar ground but manages to bring a lot of new, very usable and well defined wrinkles to the game that is clear, informative and easy to read, and it has one of the best character sheets I've ever seen.