We use the FeedWordPress plugin to import Twitter updates into our blog, select the most interesting ones and put them on the homepage. However, the Tweet plugin wasn’t working. After a bit of testing we concluded that the_content filters were being run but totally ignored! As it turns out (after a lot of code digging) The FeedWordPress plugin actually rewrites the content of it’s imported posts to their original values thus bypassing any the_content filters. Add the following lines of code to your functions.php to prevent this:

remove_filter('the_content', 'feedwordpress_preserve_syndicated_content', -10000);
remove_filter('the_content', 'feedwordpress_restore_syndicated_content', 10000);