IIRC about 40% of diggs' traffic came from Google. But when they changed their algo ~2 years ago to favor original/source content, our overall traffic dropped

IIRC about 40% of diggs' traffic came from Google. But when they changed their algo ~2 years ago to favor original/source content, our overall traffic dropped by about 30%. The value of that traffic in advertising dollars was significant, but in terms of participation in the community and growth of the site, it was almost nothing. The new site isn't ad based, so I don't think anyone really cares.