need to track a more specific list of items? The first basic way of filtering content is to retrieve only items categorized with a specific tag . Recent additions to your library marked with tag perception : CiteULike: http://www.citeulike.org/rss/user/[username]/tag/perception Connotea: http://www.connotea.org/rss/user/[username]/tag/perception A very useful feature in Connotea is the possibility to