Be able to use "codes" in user notes that display in yielded text on player tooltips.

Example:

http://imgur.com/a/t8uPg#0

I'm not sure i get it. Why would this be useful?

To get player info without having to leave the page you're on.

Perhaps you're reading something or writing something and want to see if someone saw that mobmail you sent.

Or when looking for recruits, you could use codes like #family or #sponsor, and tooltip across users to see if it's worth checking them out.

Maybe you just want to keep tabs on ranks, levels, age, wealth or protection when you tooltip someone.

Could be any particular reasoning.

I believe that this would nice for some people, especially those on a home computer, laptop, etc. Or mobile phones this would be close to utterly useless though.

I don't think that this is a bad idea, But labeling every individual profile with codes could end up being one hell of a chore.