Change Username in Less than 30 Days
33666
How do I change my Minecraft username during the 30-day restriction?
61074
How to retrieve the user name from the user ID
43025
Add new user and add meta at once
135062
United Login for Stack Exchange sites which a Person has Signed Up
7110
How can I change my name on a Stack Exchange site?
84516
Getting the real name of an user
95514
How can I find out my user name?
73204
Renaming user name
95310
How can I make my product as a trial version for 30 days?
105916
Auto-expand @username in comments to keep the username up-to-date
55017
How do I show a message with username and date at login?
41756
If I change my display name, will the change reflect in comments?
67033
Is there a portable way to get the current username in Python?
85629
You should choose your Display Name when signing up
157380
How can I create automatically expiring user accounts?
30239
cron error: bad username
49968
I changed my username and now I cannot play online