Affinity Ratings - New gigg for Digg?

Digg's filtering value is eroding now that it has become mainstream. It is time for YAM (yet another mashup) Web 2.0 style - mashing digg and social networking to deliver the ability to see one's social network's diggs, and more broadly to personalize any variety of filters for digg. Maybe some companies will even present this at Web 2.0 Launch Pad this week.

Del.icio.us has the same "diluted value due to size" challenge, and is including an early social network tool with "my network," however my network is discrete. A better implementation would be filters overlaying the whole site's functionality, allowing users to filter on all, my networks, me, and any other affinity profiles.

Affinity Ratings and Mashups 2.5
Even more useful than mashing up social networks and digg and bookmarking would be adding user-specified Affinity Ratings to digging and tagging. Users could select canned affinity profiles (e.g.; green, sustainable, entrepreneur-posted/created) or create their own - the "Jane Geek Affinity Rating." The easiest implementation of Affinity Ratings would be aggregating tags.

Digg functionality could be expanded to allow personalized affinity ratings on news, and next and more importantly, on non-news items such as products and services.