Recently (since today) I've noticed some of the questions are highlighted as in the picture below. What does it mean and how does it work?

enter image description here

  • It appears gmail tag is your favorite.
    – LifeH2O
    Aug 4 '11 at 10:17

These are questions either tagged with your favourite tags or tagged with tags you are most active in.

Checking your profile I don't see any favourite tags, so it must be the latter.

Stack Exchange is trying to make a best guess as to what you might be interested in. To get more appropriate questions set up some favourite tags.

  • 1
    Good to know. Thanks!
    – Alex
    Aug 1 '11 at 19:37

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