Systems and methods are presented for insertion of assets into a stream of content (e.g., audio and/or video programming). Such assets may be targeted to network users separate from the surrounding content and deliveries thereof confirmed. Among other things, these systems and methods enable a new advertising paradigm based on guaranteed delivery of targeted commercial impressions. In this regard, the systems and methods generally provide assets with broadcast network programming (e.g., via actual insertion and/or switching to an asset channel) based on actual audience observations. For example, asset providers may wish to target assets for delivery according to specific audience classifications (e.g., gender, income level, locale, age, etc.). Programming providers, such as television programmers and radio programmers (e.g., standard tower broadcast radio and satellite radio), may receive information from broadcast network users and insert the assets into available bandwidth based on that information.