Some detail on @Username: why doesn't Stack Overflow write a link to the referred user?
9269
Let's make it easier to reply within comments!
12336
How do I modify /user to a custom URL?
24316
Usernames vs. Real Names
21165
Escaping username characters in basic auth URLs
147193
Should the site prompt new users to include an @name in comments?
10463
How to invite friends to Stack Overflow, Server Fault and Super User?
84594
For what purposes is my user id used when sharing a link?
24018
Are there plans to get the @ name completion working on the mobile website?
111781
How do I create a link?
153733
How do you give people prefixes for their usernames?
73761
Should I include a link to my Stack Overflow profile on my résumé?
85301
"meta user" link doesn't work for all users
76553
Does using @user in a question or answer send an inbox-notification to that user?
122046
Is it best to put a link in signature, forum profile, or in a post to get backlinks?
64550
Link to chat user from profile page
72668
Dealing with "difficult" usernames in targeted comments
96280
How to enforce sender address to be "logged-in-user@example.org" in Postfix?