+- evaluate the use of the <ttl/> RSS element.
+- use the <enclosure/> element for pump.io media objects
+- use the <enclosure/> element for images on dilbert.com
+- debug some duplicated entries in the tweeter feeds in liferea
+- 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
+- add support for Instagram videos