This question already has an answer here:

When I load up Stack Overflow the Interesting tab is selected by default.

I'm not complaining, because they are all, by and large, very interesting but many of these questions have either no answers, no upvotes or both, so I am interested to know how you define interesting? Is this automated or are questions marked as Interesting by experienced moderators? If it is automated, what properties does a question needs to have to be classed as Interesting?

marked as duplicate by Shadow The Coffee Wizard, Martijn Pieters, gnat, yoozer8, Lucifer Aug 27 '13 at 0:09

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • By some hidden algorithm. One thing for sure is that edited questions are bumped. – nhahtdh Sep 30 '12 at 20:26
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    blog.stackoverflow.com/2010/11/stack-overflow-homepage-changes I should note, however, that the interesting tab appears only on SO. – waiwai933 Sep 30 '12 at 20:28
  • @waiwai933 So it does, my mistake, I have amended the question...and regardless your link contains the answer so thank you! – JMK Sep 30 '12 at 20:38
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    @waiwai933 Post that as an answer, since well... it is. – Adam Lear Sep 30 '12 at 20:58
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    @AnnaLear It's also a link-only answer; the rest of my comment, was, in fact, a comment. – waiwai933 Sep 30 '12 at 21:36

as @waiwai933 has already found the answer, this question should not remain unanswered. Here is a formatted abstract from the relevant blog.

Here’s how it works. Starting with a list of the last 3,000 active questions:

  • drop questions containing any of your ignored tags
  • drop closed questions if you lack the reputation required to vote for reopening
  • drop questions scoring -4 or lower

Next, apply the following score formula to the remaining questions:

  • your interesting tags         +1,500 per interesting tag, up to +2,000 total
  • your top 40 scoring tags   maximum of +1,000 per tag (scaled), up to +2,000 total
  • question score                  +200 × score, up to +1,000 total
  • total answer score             -200 × score, up to -1,000 total
  • number of answers           -200 × answers, up to -1,000 total
  • number of views                -15 × views, up to -1,000 total
  • question last activity date  -1 × (seconds / 15)

Count it all up and take the top 90 by score.

We also mix in a few random questions from the last 3,000 — 10% (9) for logged in users and 20% (18) for anonymous users.

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