Abstract: Systems and methods for identifying trending topics from social communications are presented. Social communications from one or more social networking sites are obtained. Links within the social communications are extracted. In various embodiments, the extracted links are filtered such that the linked content corresponding to the extracted links that can be categorized as news are retained. Topic descriptors for the retained links are generated and the topic descriptors are stored in a trending topic data store as trending topics. According to various embodiments, the topic descriptors are stored in the trending topic data store with the extracted links.

Abstract: Systems and methods for identifying trending topics from social communications are presented. Social communications from one or more social networking sites are obtained. Links within the social communications are extracted. In various embodiments, the extracted links are filtered such that the linked content corresponding to the extracted links that can be categorized as news are retained. Topic descriptors for the retained links are generated and the topic descriptors are stored in a trending topic data store as trending topics. According to various embodiments, the topic descriptors are stored in the trending topic data store with the extracted links.

Abstract: Methods, systems, and computer-readable media for simulating advertising auction results for a listing using auction data from auctions in which the listing previously participated. The simulation allows an advertiser to determine a bid price that would have resulted in a particular outcome. The simulation may be performed by rerunning auctions in which the listing participated by maintaining the characteristics of all other bids that actually participated in the auction while changing the bid price for the listing being simulated. The simulation may be repeated multiple times with different bid prices to create a distribution of auction results that correspond to various bid prices.