Template:burgeonlab
To use the syntax {{username}} around the IndieWeb, you'll need to create a "Template:username" page (officially it is called a sparkline template). Treat it as a name card templateβit allows others to access your "User:Yourdomain.com" page.
For example if I use {{burgeonlab}}, it will show a small icon and a username of my choice (doesn't have to be the same as your domain) like so: 
Naty S. Clicking on my name will bring you to my user page.
Read: Tutorial: Set up your personal wiki template for more info on creating a sparkline template. If you haven't created a "User:Yourdomain.com" page yet, do that first. See How to join the IndieWeb Wiki for more information.
To update the icon or display name your sparkline template, visit: https://indieweb.org/Template:yourusername (letter case matters).
