Abstract: Systems and methods for “blinded” messaging, wherein, a user can draft and send targeted communications to groups of other users having specific characteristics selected by the sending user, but the identification of the recipients is not provided to the sender. The system also permits the recipients to respond or engage in interact discussion with the sender, again without revealing any personal or identifying information about the recipient in question. This preserves anonymity and protects privacy. The systems and methods may be implemented in the context of a career or educational opportunity on-line services platform, which matches candidates to opportunities such as schools or jobs. Providers of such positions may also create on the platform career pathway profiles that are linked together to create an emergent, organic web of career paths for students and job-seekers to research and browse.