http://www.zurich.ibm.com/security/idemix/
Looks like it's an IBM Research project, which is nice because it means they give you actual technical information rather than burying you in incomprehensible marketing speak.
Sometimes the message gets lost in the technical detail. Arstechnica usually does a good job of filtering the sig/noise giving you a nice summary at the expense of too much technical detail. But I do agree. If you look at the way most news sites work most of the time acting as second, third and sometimes fourth hand.
So what did you get out of idemix?
The "incomprehensible marketing speak" line was aimed at the non-research IBM web pages I've seen, btw, not at Ars Technica :-) ("Delivers a rich, relevant customer and partner experience by extending a common set of business services across every point of interaction" and such.)
Whoops, sorry. Your summary looks okay. The system allows you to be used to verify your identity (verification) anonymously unlike openid, an 'identity provider'.