Marketwire acquires PRNN
EL SEGUNDO, CA: Marketwire has acquired Press Release News Network (PRNN), a social and multimedia press release distribution and archival network. PRNN represents all US metropolitan areas and 1,000 international cities through 1,200 geographical divisions. PRNN has exclusive press release distribution on Second Life , a social media press release development tool called PRWizard, and a tracking tool called PRStats.

OK, with all due respect, since when is Marketwire, or any wire service for that matter, offering true Social Media Release distribution or optimization?
Blogs, social bookmarking communities, microblogs, video and social networks, crowd-sourced voting and ranking sites, etc., these are the only platforms that define and enable social media - not wire services.
http://www.briansolis.com/2007/08/marketwire-acquires-prnn-but-is-this.html