The first real change is that we've changed the meanings of the UI around. The old system is 'Fair' and 'Unfair' and the new system is '+' and '-'. The meanings are subtly different. You are no longer rating individual 'Insightful' or 'Troll' or whatever... you are now stating basically "Is this comment good or bad for you". Personally, since I find very few Score:5 funny comments to be actually really funny (and not just cliche memes) I '-' most of them. You are encouraged to be harsh if you don't actually think something is insightful or funny, call it such. The system encourages more of what you + and less of what you -.
You are also welcome now to do more than 10 m2 per day... however we internally have diminishing returns after 10, so you can do more, but they start to matter less and less.
There will undoubtedly be bugs so feel free to email me or vroom at slashdot if you find them. Probably next week or so we'll move this out to everyone, so your assistance is appreciated.