Usually when companies litigate a breach-of-contract suit, the sore point revolves around money. But a case filed in Dallas indicates that a different form of currency is much more coveted in the Internet era: user lists.

Chalkboardtalk.com, a company that produces educational videos, filed suit against Yahoo Inc. and Broadcast.com on Dec. 20 alleging they backed out of a deal to provide Broadcast.com’s customer user information in exchange for permission to post Chalkboardtalk.com’s educational videos on Broadcast.com.