The blue links point to answers you recently visited, the others are red.
Click one of the other links and go back to the list of answers, that link should then have changed the color to blue.
The color the browsing users sees depend on visits by him, not on visits by the profile owner. Just in the case your view your own profile it's the same.
Disclaimer: I thought of posting this text as a comment, but it would be too big.
Stefan is right, the blue color means you visited that link. :)
Just to add some technical/sorcery stuff:
I checked the main site stylesheet (css) and found the following entries:
The a tag refers to a ...
The recent profile and reputation calculation redesign allows us to track reputation changes quite precisely. I checked your reputation history up to the date when you posted this question and the only negative reputation was from two downvotes to posts of yours gained on the main site:
Answer to How can I change ...
I don't get this anymore with Firefox 13.0.1 and Safari 5.1.7 on Windows 7. Does anybody still get the scroll bars? Unless they're related to the specific tags that are displayed, the problem seems to be solved to me.
The search results have a number of "tabs". In the case of [chronology] you need to click on newest or votes to see 4 hits, frequent and unanswered currently have no hits. By default, the system remembers which tab you looked at last time you did a search, so the first list shown to you has a good chance of being one of the tabs with a small number of ...
We can't reproduce this. Are you still seeing this as an issue? Chrome is updated aggressively, so I suggest:
clear your browser cache
make sure your Chrome is updated to the latest version (via the About wrench menu item)