This is the revision history for 5 v 6 in <freenode.net:#perlbot>

factoid_idsubjectcopulapredicateauthornamespace
6075 5 v 6 is http://www.shadowcat.co.uk/blog/matt-s-trout/-5-v-6.html also see 6 v 5 simcop2387-lap <*:##NULL>
5800 5 v 6 is http://www.shadowcat.co.uk/blog/matt-s-trout/-5-v-6.html perlbot <*:##NULL>