increased conversion and average order value in our Marketplaces segment and the acquisition of Deny Designs in May 2017. Management preliminarily estimates that for the year ended December 31, 2017 our Marketplaces revenue will be between $83.8 million and $84.5 million, compared to revenue for the year ended December 31, 2016 of $66.1 million. The increase in Marketplaces revenue for the year ended December 31, 2017 is primarily the result of increased conversion and average order value in our Marketplaces segment and the acquisition of Deny Designs.
Media Revenue
Management preliminarily estimates that for the three months ended December 31, 2017, our Media revenue will be between $11.5 million and $11.8 million, compared to Media revenue for the three months ended December 31, 2016 of $11.4 million. The increase in Media revenue for the three months ended December 31, 2017 is primarily the result of increased traffic on Livestrong.com, offset by the realignment of our content studio in 2016 and lower monetization on eHow due to our strategic shift to launch several category-specific media properties leveraging topics and content from eHow. Management preliminarily estimates that for the year ended December 31, 2017 our Media revenue will be between $44.7 million and $45.0 million, compared to Media revenue for the year ended December 31, 2016 of $47.3 million. The decrease in Media revenue for the year ended December 31, 2017 is primarily the result of lower monetization on eHow due to our strategic shift to launch several category-specific media properties leveraging topics and content from eHow, decreases in traffic from the divestitures of certain media properties, including Cracked in 2016, and the realignment of our content studio in 2016, partially offset by increased traffic on Livestrong.com.
Net Loss
Management preliminarily estimates that for the three months ended December 31, 2017, our net loss will be between $(4.4) million and $(6.3) million, compared to a net loss of $(6.2) million for the three months ended December 31, 2016. The change in net loss for the three months ended December 31, 2017 is primarily the result of revenue growth on Livestrong.com, improved operating contribution in our Marketplaces segment and an overall reduction of operating expenses in our Media segment, primarily from lower personnel and related costs.
Non-GAAP Financial Measures
Adjusted EBITDA
We define Adjusted EBITDA as net income (loss) adjusted to exclude income tax benefit (expense), interest income (expense), other (expense) income, depreciation and amortization and stock-based compensation. We have provided below a reconciliation of Adjusted EBITDA, anon-GAAP financial measure, to net income (loss), the most directly comparable GAAP financial measure.
Management preliminarily estimates that for the three months ended December 31, 2017, our Adjusted EBITDA will be between $(0.7) million and $(0.2) million, compared to $(2.6) million for the three months ended December 31, 2016. The increase in Adjusted EBITDA for the three months ended December 31, 2017 is primarily the result of revenue growth on Livestrong.com, improved operating contribution in our Marketplaces segment and an overall reduction of operating expenses in our Media segment, primarily from lower personnel and related costs.
Adjusted EBITDA is one of the primary measures used by our management and board of directors to understand and evaluate our financial performance and operating trends, includingperiod-to-period comparisons, because it excludes certain expenses and gains that management believes are not indicative of our core operating results. Management believes that the exclusion of these expenses and gains provides a useful measure forperiod-to-period comparisons of our underlying core revenue and operating costs that is focused more closely on the current costs necessary to operate our businesses and reflects our ongoing business in a manner that allows for meaningful analysis of trends. In addition, management believes that excluding certainnon-cash charges can be useful because the amounts of such expenses is the result of long-term investment decisions made in previous periods rather thanday-to-day operating decisions. Adjusted EBITDA is also one of the primary measures management uses to prepare and update our short and long term financial and operational plans and to evaluate investment decisions.
Accordingly, we believe that Adjusted EBITDA provides useful information to investors in understanding and evaluating our operating results in the same manner as our management and in comparing operating results across periods and to those of our peer companies. However, the use of Adjusted EBITDA has certain limitations because it does not reflect all items of income and expense that affect our operations. We compensate for these limitations by reconciling Adjusted EBITDA to net income (loss), the most comparable GAAP financial measure. Further, Adjusted EBITDA does not have a standardized meaning, and therefore other companies, including peer companies, may use the same or similarly named measures but exclude different items or use different