Politics & Media Mashup: your weekend news aggregator leads off with a look at a web site striving to become the first pure social news organization. Also included: A good week for the U-T, the paper’s plan to start cheering for a new Chargers stadium, and links to some of the week’s best stories about local, state and national politics as well as social media.

The demise of newspapers and online news sites is a familiar story line, so it’s refreshing to see someone with a bold idea that could help save journalism.