blo.gs pings via mod_pubsub

with a pubsub client, you can now get the feed of pings from http://localhost:8000/kn/pings. there's no end-user interface on it, but you can use the subscribe.py client from the mod_pubsub distribution.

this may change, or go away. right now, it only includes results from pings, not the result of aggregated update information.

i have taken this down. the thought from people that know is that something like xmpp or a custom protocol will be more appropriate.