Abstract: Systems and methods to control the lifetime of social networking posts. The viewable range and/or duration of a post is determined as a function (e.g., Gaussian) of the viewer location/position relative to the post location/position and other factors, such as, local content density power of the poster, net likes, etc. The expiration time of the post at the viewer location/position is extended when content density is low, and reduced when content density is high. Posts are retained for a fixed duration in server; and zone-relevant content is delivered to clients based on local content density. Content from distant cells is highlighted by graphics that distinguish it from local range posts.

Abstract: Systems and methods to let users connect authentically with new people anywhere nearby in homes, offices, classrooms, dorms, bars, etc., where the users can be who they really are, and also say what they want without fear, using periodic anonymized posting of expiring content from an otherwise attributed user profile. Users put out a broadcast message and get back personal communications. A one-to-many message from a user results in a one-to-one private communication, which feature may be referred to as “social to personal”.