Designers have their own Digg. It’s called Design Float and carries aggregated news in graphic design, web design, identity and branding, illustration and other associated categories.
Design Float has more than 6500 members who are able to submit and vote content up or down.
According to the LA Times, community supported niche aggregators are sprouting up all over the place. There’s Tip’d for business junkies; Auto Spies for car enthusiasts; and Ball Hype for sports hounds.