crazy_dave: Oddly enough limiting the review to only people who have bought the game might actually increase the nostalgia factor in the early reviews (which tend, not always, but tend to be the ones that end up on the front page). The reason is because the often the people who insta-buy buy the game on GOG have played the game before and loved it and this is their xth time paying for the game. The reviews you select for, especially early one, are people who have played before and want to buy it again. Whereas someone who tries to warn people that the game is not good or is at best mediocre (and is willing to explain why beyond "Do not buy suXors, herp derp!!!!) can't post because they don't want to buy the game again - they didn't really like it. So with second run sites you select even further for positive reviews if you restrict to people who have bought the game. You see this often with second run sites. First run sites the reviews limited to people who have bought the game don't have this problem.
maycett: Lots of people review out of nostalgia when they haven't even bought the GOG version of the game, and don't intend to. Of course if reviewing was restricted there would still be people so excited by the release of an old favorite, that they'd buy and review before playing it, but the ratio of nostalgia reviews to proper reviews would at least be better. And the random spiteful reviews would disappear entirely.
Anyway, I don't read GOG reviews to decide if I want a game. I find the game forums or googling to be more helpful.
My experience on second run sites where they limit the reviews to people who have bought the game or movie is opposite - those who have the bought the game already have played it or watched the movie and are buying because they like it so much. This biases it far in favor of the movie/game in question. I see this all the time on movie sites where you have to buy the movie to review it (since many people have seen the movie in the theatre or on TV and are now buying the movie). The reviews are almost overwhelmingly positive on every movie, no matter how bad. Restricting to buyers actually increases, not decreases the nostalgia ratio because only those who have nostalgia for the game end up reviewing it because they're the ones who bought it, especially in the beginning, and those are often the ones that end up in the front game card. The people with intense nostalgia are likely to pick it up again. People who played the game and do not have nostalgia for the game don't buy insta-buy it and therefore can't review it. I would agree that an overly nostalgic review is not necessarily a bad thing as long as they bother to explain what made the game so special to them. It's the one liners: "Buy, it's awesome" that are not particularly useful. You are right that it would eliminate the spiteful, ill-thoughtout reviews. However, a minimum word requirement should take of both.
Despite the fact that I have read the odd good review of a game on GOG, the forums are probably more helpful. :)
lowyhong: After reading this thread, I almost feel bad for my Deus Ex review. Then again, it's such a popular household title, I think "A bomb!" still qualifies as a reasonable review :>
You are an awful human being ... :)
(internet note: that was intended to be jocular and not offensive)