On Tuesday, we reported on some data Shareaholic released, indicating that the traffic StumbleUpon sends to publishers has decreased by 53% since July. Um, not so fast, says Stumbleupon.

StumbleUpon Director of Communications Mike Mayzel tells WebProNews, “We do not agree with the Shareaholic data. Our internal data shows that since July the number of Stumbles and referral traffic have increased over that timeframe.”

“We have reached out to Shareaholic to better understand their methodology,” he adds. “Moving forward, we believe our redesigned web site and mobile apps will continue to deliver the best content discovery experience on the Web for our community and our partners.”

It doesn’t look like Shareaholic has updated its report so far.

Earlier this week, we reported that StumbleUpon removed the Explore Box from its toolbar, so it does appear that StumbleUpon wants to generate more traffic to its own site.