Script Summary: Filters out any unwanted blocks on http://forum.mozillaZine.org and http://custombuttons.sourceforge.net forums using keyword or phrase.
Multiple words/phrases are to be separated with <> and no spaces (i.e. 'tumblr<>my facebook page<>youtube'). Case sensitive searches. Will hide blocks with the exact word or phrase (i.e. 'book' will not hide 'facebook'). Be specific as possible as not to hide wanted blocks (look for unique words or phrases). Clicking filtered button toggles show/hide filtered blocks. Middle click in input box inserts all active keywords and double click to clear field. Each page has separate filter.