Okay.
To completely ignore users on your ignore list -
For Firefox first go to
https://addons.mozilla.org/en-US/fir.../greasemonkey/ and install the Greasemonkey add-on.
Then restart you browser and click this link
http://www.ardiman.de/assets/files/f...ignore.user.js
Click Install to run script.
For Chrome click the link
http://www.ardiman.de/assets/files/f...ignore.user.js and click Install.
To get rid of it in Chrome go to Options - Extensions, then remove and in Firefox go to Tools - Greasemonkey - Manage User Scripts, then remove.
UPDATE: For Chrome it might not let you install extension outside of Chrome Web Store anymore so try this instead -
https://chrome.google.com/webstore/d...capnh?hl=en-GB
UPDATE: For Safari I think you need to install GreaseKit-1.7.dmg from
http://8-p.info/greasekit/ first - I haven't tested this.