I think the best way is to override SimplePie_Item's "get_title()" to have it filter the bad words, making it transparent for the user while retaining the integrity of the original source data just in case. Repeat for "get_content," etc.<?php// override SimplePie_Itemclass SimplePie_Item_filter extends SimplePie_Item{ function get_title() { $title = parent::get_title(); if(!$title) return null; $title = filter_bad_words($title); return $title; }}$feed = new SimplePie();// tell SP its got class$feed->set_item_class('SimplePie_Item_filter');// mitt romneyyyyy$feed->init();// smoke it with a filterfunction filter_bad_words($title){ $evilwords = '(microsoft|riaa|mpaa|osama|putin|circularreferences|memoryleaks|pita|rubyoncrack)'; $pattern = "/$evilwords/is"; $replacement = ''; $filtered = preg_replace($pattern,$replacement,$title); return $filtered;}