StumbleUpon Offers ‘No Comment’ on Reports It Is Buying Delicious

After rumors swirled last week that Yahoo had sold social bookmarking property Delicious for $5 million, peHUB sources now suggest the buyer is the social discovery platform StumbleUpon.

Asked for comment just now, StumbleUpon’s Mike Mazel said simply that “we are not commenting on the rumor,” the sort of non-denial that typically hints a deal could be announced imminently. Neither Mazel nor co-founder and CEO Garrett Camp would elaborate.

BusinessInsider reported last night that it’s also hearing StumbleUpon may have acquired Delicious and its sources put the price tag at between $1 million and $2 million.

StumbleUpon would certainly be an ideal home for Delicious, which had approximately 300,000 users when it was acquired by Yahoo in 2005 for a reported $15 million to $20 million. Delicious’s data — including users’ historical bookmarking preferences —  could be very valuable to fast-growing StumbleUpon.

More, StumbleUpon seemingly has more than enough money for a small acquisition. Earlier this month, the company, which now has 14 million registered users — 3 million to 4 million of whom actively use the service  — raised $17 million from Accel Partners, DAG Ventures, August Capital, Sherpalo Ventures, and others.

The San Francisco-based startup employs roughly 70 people.

I spoke with StumbleUpon’s co-founder and CEO Garrett Camp last week. You can check out a longer profile of him in the upcoming issue of Venture Capital Journal.