Many news sites require a username and a password, which is understandable in terms of specific business model requirements. Still, the burden for news readers, who are required to register and maintain an account information for each individual site becomes a real problem. Especially considering the huge cross-linking the blogosphere offers for online news sites.
I think that a central identity management service, which will provide a single sign-on service for these sites will be very popular. At least for me:) and few colleagues of mine as well. A different approach can be to integrate this capability into news aggregators who serve the links to those news sites.
Anyone who cares to do something about this I will love to assist if I can.