After having purchased well-known link aggregator Digg six weeks ago, social web incubator Betaworks launched the promised "rebuild" of the site on Tuesday. The new site has a complete redesign, switching to editorial rather than user curation, and featuring snappier performance. A new iPhone application has launched in parallel with the redesign, giving iOS users a native interface for the new site. Betaworks promises more features in the future -- including network-based personalization features, a new commenting engine, more work on mobile Digg, more data presented to the users, and API dev
