I'm with ahmadka here. - this is a quicker and friendlier overview imo. It's clear what it's about. With the Karma page I don't really know if a high karma just says something about stability, or also about user-friendliness, usefulness, and perhaps how many friends the author has on the forum (not saying that is the case, I just don't know). I suppose I could find out, but for that, see the start of this point.
- it is not double work per se to create more than one source of information. How many reviews of the N900 did you read before buying?
- this thread really was the first time I heard about this Karma page. And I've read a lot of posts on this forum before this one