Methods and apparatus involve the voluntary transfer or sharing of item(s), such as files or other data, based upon the automatic discovery of recipients, including sender pushing of the items and recipient approval. During use, computing devices advertise their availability for potential receipt of the items and recipients are automatically discovered. The sender attaches the items to a selected recipient, and a size, description, etc. of the items is calculated. Upon a connection between the sending and recipient computing devices, the sending device pushes to the recipient an identifier of the sender and the size, description, etc., so the recipient can determine whether they want to accept transfer. If so, the items are transferred, including display of the progress. If not, the sender is notified of the refusal. Other features contemplate attaching techniques, visual information display, authentication of parties, computer program products, and systems, to name a few.