Take into account all of the reputations from all stackexchange sites
1136
How does "Reputation" work?
45621
How to get initial reputation on Stack Overflow with the new-user restrictions in place?
83125
Display only relevant reputation points
57404
Propose a privilege to sit in the 500 reputation mark
142259
Off-topic option should include all Stack Exchange sites
17526
What are the reputation requirements for privileges on sites, and how do they differ per site?
10343
Make voting activity on your posts available on site metas (what you would get from rep if metas had rep)
38367
Towards a Stackexchange-like comment/reputation system for research papers
157285
Stop the segregation madness. Merge all Stack Exchange sites and differentiate them by tags
155053
How is per-tag reputation calculated?
75362
View site with a specific reputation value (lower than your own of course) or as a specific user (for mods)
30574
How Can I View All The Reputation Gained/Lost For One Specific Question
3152
How do I read the history of my reputation?
77961
Require reputation earned on the main site to vote on a per-site meta
126321
Reputation sharing after a post edit
31641
What software is used to generate the reputation graphs on Stack Exchange?
117212
See all my questions across all Stack Exchange sites?