Maybe just a naive question… Can some explain why I would want/need to tag a domain?
You might want to associate a domain with a customer/project if you have a lot of them. Or you might use the API to automatically do things to linodes, domains, or other services based on the tags it may or may not contain.
You can mention users to notify them: @username
You can use Markdown to format your question. For more examples see the Markdown Cheatsheet.
> I’m a blockquote.
I’m a blockquote.
[I'm a link] (https://www.google.com)
I'm a link
**I am bold** I am bold
*I am italicized* I am italicized