2. Revenue Recognition

Our primary source of revenues is from subscription fees. Subscribers are billed in advance at the start of their subscription and revenues are recognized ratably over the subscription period. Revenues are presented net of the taxes that are collected from members and remitted to governmental authorities. We are the principal in our partner relationships where we retain control over delivery to subscribers. For relationships where the partner controls the delivery to the subscriber, we recognize revenues on a net basis. Typically, payments made to partners for joint marketing activities are expensed.

Deferred revenue consists of subscription fees billed that have not been recognized. The vast majority of our deferred revenue is related to subscription fees that are expected to be recognized as revenue within the next month. The remaining deferred revenue balance is related to annual subscriptions that will be recognized as revenue over the remaining subscription period, which is expected to occur over the next 12 months.