OPML is the tree. RSS are the vines. Items (articles, podcasts etc.) are the fruit. And with OPML's ability of 'inclusion' (to any remote tree or branch), it

OPML is the tree. RSS are the vines. Items (articles, podcasts etc.) are the fruit. And with OPML's ability of 'inclusion' (to any remote tree or branch), it makes creation, curation and 'harvesting' the fruit, a joy.