OpenMicroBlogger is my new open source microblogging product, it is compatible with Identi.ca/Laconi.ca by Evan Prodromou.
On June 16 I was searching for “OAuth XRDS” and found a brand-new specification at http://openmicroblogging.org written by Evan Prodromou.
The spec had the features I was looking for: cross-site real-time subscriptions, cross-site profile updates, cross-site avatar/profile transfer. I was doing some of this stuff between my sites already with OpenID/SREG but Open Microblogging 0.1 had a terrific feature set.
http://openmicroblogger.com and http://openmicroblogger.org are the new Web sites where you can find out about OpenMicroBlogger, which is a new implementation of the OpenMicroBlogging.org specification for site-to-site Microblogging.