Entire Agreement. The TOS constitutes the entire agreement between you and Yahoo and governs your use of the Yahoo Services, superseding any prior version of this TOS between you and Yahoo with respect to the Yahoo Services. You also may be subject to additional terms and conditions that may apply when you use or purchase certain other Yahoo services, affiliate services, third-party content or third-party software. Choice of Law and Forum. You and Yahoo each agree that the TOS and the relationship between the parties shall be governed by the laws of the State of California without regard to its conflict of law provisions and that any and all claims, causes of action or disputes (regardless of theory) arising out of or relating to the TOS, or the relationship between you and Yahoo, shall be brought exclusively in the courts located in the county of Santa Clara, California or the U.S. District Court for the Northern District of California. You and Yahoo agree to submit to the personal jurisdiction of the courts located within the county of Santa Clara, California or the Northern District of California, and agree to waive any and all objections to the exercise of jurisdiction over the parties by such courts and to venue in such courts. Waiver and Severability of Terms. The failure of Yahoo to exercise or enforce any right or provision of the TOS shall not constitute a waiver of such right or provision. If any provision of the TOS is found by a court of competent jurisdiction to be invalid, the parties nevertheless agree that the court should endeavor to give effect to the parties' intentions as reflected in the provision, and the other provisions of the TOS remain in full force and effect. No Right of Survivorship and Non-Transferability. You agree that your Yahoo account is non-transferable and any rights to your Yahoo ID or contents within your account terminate upon your death. Upon receipt of a copy of a death certificate, your account may be terminated and all contents therein permanently deleted. Statute of Limitations. You agree that regardless of any statute or law to the contrary, any claim or cause of action arising out of or related to use of the Yahoo Services or the TOS must be filed within one (1) year after such claim or cause of action arose or be forever barred. The section titles in the TOS are for convenience only and have no legal or contractual effect. Yahoo may freely assign the TOS and all of the policies and other documents incorporated or referenced in it (including all rights, licenses, and obligations under it or them), in whole or in part and without notice.
Source : https://policies.yahoo.com/us/en/yahoo/terms/utos/index.htm