Improvements on StackOverflow frontend & user experience
71649
Ability to add tag to Interesting/Ignored by clicking on it
47768
Using code posted on StackOverflow
98508
Performance benchmark: PHP Generated content VS. javascript and DOM over AJAX
13451
Favorites improvements - search, categorize, personal tags, add note, favorite answer
124213
Do questions about specific StackOverflow implementation details belong on SO or Meta?
33644
Should we have a subjective version of every Stack Exchange site?
56630
Moderator tools for Stack Exchange app
134217
Interesting tab on StackOverflow
137521
Improved Help Center - site-specific pages and site-specific edits to all pages
84443
How can we improve the experience for non-native speakers on Stack Overflow?
58565
Different look and feel between administration and end user experience?
18131
How Do I improve the performance of my Drupal7 Site?
93548
Encouraging software publishers to use StackExchange as support mechanism
68981
Improve the usability/intuitiveness of direct comment links
115407
Stack Overflow 'review' button is slow, and test questions are slower
108565
Improved experience for users with review suspensions
141354
Deciding between slow beta sites and Stack Overflow