How could you find a user's rank by tag and location on Stack Overflow?
14244
Finding specific users by their location and a tag score
106532
Tag hierarchy to browse through tags
78841
Where can I find out about Stack Overflow history?
42172
Determining user's reputation as of particular date?
45621
How to get initial reputation on Stack Overflow with the new-user restrictions in place?
56515
Question tag score and suggesting tag synonyms?
139005
(Nicer) user leagues per tag
82039
Search for singleton tags on questions
45418
Finding Stack Overflow/Exchange users based on geographic area?
118695
What on Earth creates the number next to my tag score in my profile?
96235
How do I find the privileges I have earned and will earn in Stack Overflow?
127995
How can I objectively check my search engine ranking?
57284
How do I search for questions with (or without) specific tags?
45284
Top Users page clips long tag names
54249
Logic Behind StackOverflow Question IDs
125928
How does Stack Overflow suggest related tags?
68249
Tracking the questions you've recently viewed or visited