Comment by esafak
3 days ago
Slashdot let you rate content across multiple dimensions.
I see no specifics about the scoring in the wikipedia article, but a search revealed that it was a simple, single five star rating scale. The same as on Amazon, and formerly Netflix?
Yes, as simple as can be. It's the recommender system that made the difference, and that was dead simple, too, but resulted in a subjective "weighting" of scores: your recommendations would depend more on people who were like you.