EBITDA and Adjusted EBITDA Results. TiVo's "EBITDA" means income before interest income and expense, provision for income taxes and depreciation and amortization. TiVo's "Adjusted EBITDA" is EBITDA less expense for stock-based compensation. EBITDA and Adjusted EBITDA are not measures of financial performance under generally accepted accounting principles, which we refer to as GAAP. We have presented EBITDA and Adjusted EBITDA solely as supplemental disclosure because we believe they allow for a more complete analysis of our results of operations and we believe that EBITDA and Adjusted EBITDA are useful to investors because EBITDA and Adjusted EBITDA are commonly used to analyze companies on the basis of operating performance. In addition, because of the variety of equity awards used by companies, the varying methodologies for determining stock-based compensation expense, and the subjective assumptions involved in those determinations, we believe excluding stock-based compensation enhances the ability of management and investors to evaluate our operating performance over multiple periods. Management does not use EBITDA or Adjusted EBITDA as a measure of liquidity because, among other things, they do not exclude the impact of deferred revenues associated with the amortization of product lifetime subscriptions. We do not use stock-based compensation expense in our internal measures. A limitation associated with these non-GAAP measures is that they do not include any stock-based compensation expense related to hiring, retaining, and incentivizing the Company's workforce. EBITDA and Adjusted EBITDA are not intended to represent, and should not be considered more meaningful than, or as an alternative to, measures of operating performance as determined in accordance with GAAP.
TIVO INC. OTHER DATASubscriptions Three Months Ended April 30, ---------------------- (Subscriptions in thousands) 2013 2012 ---------- ----------TiVo-Owned Subscription Gross Additions: 24 24Subscription Net Additions/(Losses):TiVo-Owned (22) (29)MSOs 277 235 ---------- ---------- Total Subscription Net Additions/(Losses) 255 206Cumulative Subscriptions:TiVo-Owned 1,007 1,080MSOs 2,397 1,405 ---------- ---------- Total Cumulative Subscriptions 3,404 2,485Fully Amortized Active 181 238% of TiVo-Owned Cumulative Subscriptions paying recurring fees 52% 55%
Subscriptions. Management reviews this metric, and believes it may be useful to investors, in order to evaluate our relative position in the marketplace and to forecast future potential service revenues. Below is a table that details the change in our subscription base during the last eight quarters. The TiVo-Owned lines refer to subscriptions sold directly or indirectly by TiVo to consumers who have TiVo-enabled devices and for which TiVo incurs acquisition costs. The MSO lines refer to subscriptions sold to consumers by MSOs such as DIRECTV, Virgin, ONO, RCN, Grande, and Suddenlink, among others, and for which TiVo expects to incur little or no acquisition costs. Additionally, we provide a breakdown of the percent of TiVo-Owned subscriptions for which consumers pay recurring fees as opposed to a one-time prepaid product lifetime fee.