Even before Warner Wolf took us to the videotape, highlights have served fans as currency of their passion. Did you see that home run? That dunk? That overtime goal? That buzzer beater?

Highlights and full games are significant elements of league and media Web sites, but what is available online is chosen largely by the outlets, not the fans. With its tournament approaching, the N.C.A.A. has found a way to exploit a portion of its men’s basketball tournament archive by ceding a significant amount of clip selection to fans.

Through a deal with the N.C.A.A., Thought Equity Motion has digitally diced every tournament game this decade from the Round of 16 forward into all of its notable plays, and assigned a Web address to each of them. It lets fans watch any of the games, or thin slices of them, and link to social networking sites like Facebook or Twitter or to their blogs.

The NCAA Vault, at NCAA.com/vault, is making its formal debut Wednesday after finishing its beta phase.