OPML Aggregator, sort by canonical date / truncate 50
NB: Input disabled; hard-wired OPML source. (Origin Mark Woodman) Aggregates feeds in an OPML file into a master pipe, where all items from RSS or Atom feeds are sorted correctly by date. This is accomplished by creating canonical date attributes using Rename and Regex.
Pipe Web Address: http://pipes.yahoo.com/bentrem/wp_opml