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On SO, when I'm scrolling through "questions" some have a yellow background. Is this intuitive to everyone but me? What is the yellow background trying to tell me about this particular question?

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marked as duplicate by animuson, Austin Henley, hims056, Toon Krijthe, Rory Feb 11 '13 at 8:40

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.

up vote 58 down vote accepted

The questions highlighted in yellow have tags you have marked as interesting. Questions appearing grayed out you have marked as ignored. You can manage these either on the front page or on the preferences page of your profile.

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Wow. That's great. Although it wasn't intuitive to me when I saw the color. I wonder if a tooltip or something is warranted here? – Kurt W. Leucht Jul 30 '09 at 20:23
Was pretty intuitive for me =/ – Ian Elliott Jul 30 '09 at 20:29
totally non-intuitive to me. I specifically came to meta today to find out why this was happening. – Taryn East May 17 '11 at 8:31
Non-intuitive for me also. – Bear. Teddy Bear. Jun 2 '11 at 16:21
I also came to meta today just to find out about the yellow background (and imported my account just to leave this comment). At first I assumed that they were newer questions or questions with less satisfactory answers. – octern Mar 12 '12 at 17:46
I too had to come here and find out why some of the questions were highlighted. Now it makes sense. – Miguel-F Sep 6 '12 at 19:08
Non-intuitive. Just searched Google to find an answer to this question. – Trevor Sullivan Jan 8 '14 at 14:01
Obvious now I read this, totally wasn't before – Matt Harrison Jul 24 '14 at 5:27
I just tried to upvote this answer, then found I voted it already 3 years ago. So not only is it not intuitive, it's not memorable :( – barryhunter Feb 18 '15 at 17:49
Are we sure this is correct. I have the tag "css" added as a favorite and I've posted a question that is tagged with "css". When I navigate questions with the "css" tag, my question is white, when I navigate to "html" where my question also shows up, it's yellow. – ThrowBackDewd Mar 31 at 1:14
I browse only my favourite tags but still a subsection gets highlighted yellow. This seems to be when the question contains 2 out of 3 of my tags. – Nick Cardoso Apr 13 at 8:19

There are two reasons a question can be marked as yellow.

Favorite tags

You can add favorite tags from the main page, or the prefs page (Link to prefs above bio in profile). They get highlighted on all pages (except for their own tag pages).

enter image description here

You can also ignore a tag, and it will grey out/disappear (depending on prefs and the page). Note that ignored tags have preference over favorite tags. In the example above, a question tagged will be greyed out.

Frequented tags

If you post on a tag often, and have a good enough score, the system decides you like the tag and auto-highlights it. This is only if you have not specified any other favorite tags.

Of course, it can lead to this{*}:

enter image description here

If you really don't want to choose favorite tags, then add some random nonsense tag to the list. SOmewhere on MSO, I saw used for this, so I use it as well.

enter image description here

*That did happen to me. I was besieged by enticing yellow QM questions that I didn't know a thing about.

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Those questions have tags that you have marked as interesting.

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Conversely, the tags which you mark as ignored will be grayed out.

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