Open source microblogging program Laconica

Ident.ca is a microblogging platform similar to twitter, Fanfu, etc. The only difference is that Ident.ca is supported by a free software named Laconica licensed under the GNU Affero General Public License. OpenID login is also supported, and user posts are authorized according to the Creativecommons 3.0 protocol. Currently supported IM tools are jabber and gtalk, but there is no API yet, but because the source code is completely open, I believe that some of the features that twitter can do will soon be done by Ident.ca.