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Yes, I'm already planning to add a button to "remove" recommendations.

The recommendations algorithm is based on some heuristics to detect how similar are two users. Nothing "generic". I'll describe it in detail if you are interested.

Now I'm trying to get information about why the HN submission is invisible...

EDIT. The submission was flagged by users. Weird.

Two Chromes - one is in Desktop category and the other is in Mobile.

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I noticed that the recommendations are probably equal to the union of fuzzy intersections of a tool set of the "logged in" user and every other user's tool sets, where the "fuzzy membership" function is an assignment of importance scores to tools.

By "fuzzy" operations I mean the mathematical theory [0]

I see that many people didn't change default importance score from 5, looks like UI is bad for this.

[0] http://en.wikipedia.org/wiki/Fuzzy_set

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