A system can associate interests and responsibilities that correspond to a user account with a tag, based on search data originated by the user account. The system can determine content to send to the user account based on the tag. The system can determine that an offering is first offered after sending the content to the user account. The system can determine that the user account has purchased the offering. The system can determine that a portion of a commission associated with the user account purchasing the offering is credited to sending the content to the user account based on the tag. The system can store an indication that the portion of the commission associated with the user account purchasing the offering is credited to sending the content to the user account based on the tag.