The concept of real-time Web became more popular. Real-time information to be shared between sites. I made some models and will introduce it soon.
Primary language : Erlang
Protocol : XMPP over BOSH
XMPP server: Ejabberd (had Pubsub service)
Server database: CouchDB or Riak
Web host: Webmachine + Mochiweb behind Ngnix
Beta version at : http://stocktm.com