socialnewswatch.com —
Compete.com’s and Alexa.com’s numbers are far from gospel, but they do offer an excellent comparative indicator for traffic. Looking at the traffic estimates and trends for Reddit and Propeller, it’s very conceivable that Propeller will overtake Reddit for the #2/#3 (depending on whether you consider StumbleUpon a social news website) position behind Digg amongst the social news powerhouse websites.