Ignore a given user's messages?

Is there a way to tag a user so that I won't see his incredibly annoying messages?
Thanks!

This is for the mobile version. Might be different for browser. Click on their name. At their profile, click the add/remove button. From the drop down, click "add to ignore list". I'm not a mod, I just understand where you're coming from.

If you are logged onto the site not using the mobile app, go to the User CP (control panel - it is on the right hand side of my screen) then click on Edit Ignore List and add the nam or names.

Thank you both!