- write a better XSL stylesheet? I am not an XSL expert.
- evaluate the use of the RSS element.
- use the element for pump.io media objects
- use the element for images on dilbert.com
- 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