"...by sharing an OPML based Reading List Piaras would be providing an "attention lense" which could be applied to many services going forward. Take Kevin Burton's TailRank for instance. It allows me to build my own Memeorandum and import any OPML list I wish. So, if I was to import Piaras' Reading List I could effectively see the world through his eyes! That's what's exciting about Attention data and for the moment it looks like OPML is going to be at least a starting point for Attention applications."