I'm not sure DMCA applies here, as it only bans tools that circumvent technical measures intended to enforce copyright protections. I don't think that Kayak's d

I'm not sure DMCA applies here, as it only bans tools that circumvent technical measures intended to enforce copyright protections. I don't think that Kayak's data is copyrightable (on the basis of Feist Publications, Inc., v. Rural Telephone Service Co., which says that mere compilations of public information with no creative aspect aren't considered copyrightable), so DMCA shouldn't apply. But likewise, IANAL.