Freefest, the free version of Ozzfest, went clean on its free tickets for all 24 dates in four days. More than 428,000 tickets in all were given away through, which producers say is the largest number of free tickets distributed in the U.S. in the history of the concert business.

In a staged release beginning June 8 via various sponsor sites, including Monster Energy, Jagermeister, FYE, Pilgrim Films, Hustler Lingerie and WWE, enabled fans to enter exclusive codes to obtain tickets.

More than 228,000 tickets were distributed on June 12 alone, with the last ticket given away just after midnight. The tickets were downloaded for print-at-home application by fans.

"We're just so proud of the result, the demand was absolutely overwhelming," says Jason Garner, president of North American Music for Live Nation. "We distributed nearly half a million tickets in about 72 hours, including almost 300,000 in one 24-hour period. It says a lot about the demand for Ozzy and Ozzfest, a lot about the fans perceived value with this tour, and from our perspective we're very happy that was able to handle that traffic and deliver such a resounding win for everybody."

Of course, not long after the sale was completed, formerly free Ozzfest tickets for all dates on the tour were being posted for sale at online sites like StubHub and eBay for prices ranging from $20 to hundreds of dollars.

Garner tells that that development reflects the nature of the concert business today. "We certainly didn't set up this year's free Ozzfest with the intention of allowing third party ticket brokers to make money," he says. "We are in the process and will very soon be launching our own auctions, with a portion of the proceeds going to benefit Sharon Osbourne's cancer charity in an attempt to make sure that fans can get tickets legitimately."

Garner says the auction tickets will be from a pool of tickets that were not distributed in the initial free offering. Ozzfest begins July 12 near Seattle at the White River Amphitheatre, with headliner Ozzy Osbourne to be joined by Lamb of God, Static X, Lordi, Hatebreed, Behemoth, Mondo Generator, Nile, Ankla, Circus Diablo, the Showdown, 3 Inches of Blood, Daath, Chthonic and In This Moment.