I have just pushed wp-diso-actionstream version 0.50 out. You can download it from the usual place.

Changes

• Changed byline to “DiSo Development Team” to reflect all the contributions by Will Norris (more specific contributors in LICENSE file)
• actionstream_services filter as the way developers add custom service definitions
• Better YouTube support
• Support for many new services: userscripts.org, brightkite, getsatisfaction, backtype, github, and twitter favourites
• Sidebar widgets (actionstream and services list)
• Template tag for services list
• Nicer RSS feed URLs
• Some major refactoring
• Integration with new permissions plugin
• Intelligence in service display when wp-diso-profile is installed