Advertising Philosophy
The login page is the doorway to Yahoo! It is the entry point into our users email and other communication tools online. Therefore, it is important that any advertising shown on the login page not affect a users feeling of security, trust, and accessibility to Yahoo!'s products.

Advertising Guidelines
The following guidelines apply to all ads appearing on Yahoo! login pages. In addition to these guidelines, all advertising must comply with Yahoo! Ad Policy including; the technical requirements, privacy policy, guidelines and Yahoo! terms of service.