- re-evaluate the use of trigger_error() or use a custom error handler, because right now the code exists as soon as trigger_error() gets called and any following code is ignored. - write better XSL stylesheets? I am not an XSL expert - evaluate the use of the RSS element - show cards directly in RSS items for twitter.com - show direct links for videos in the Instagram feed - check the encoding of the tweets when UTF is used, maybe solvable with mb_convert_encoding()? See http://php.net/manual/en/domdocument.loadhtml.php - The dependencies on the symphony components in composer.json could be more relaxed like ">=2.7.0", but for now sticking to "2.7.*" is good enough.