1. A method comprising: scanning, at at least one server, a network of data sources, thereby identifying item data for a plurality of items and review data from a plurality of reviewers for a plurality of the items; prioritizing, at the at least one server, at least two data sources based in part on a predictive value of the review data identified via the scanning, the predictive value indicating a reliability of the review data; harvesting, at the at least one server and in an order based on the prioritizing, the item data and the review data from the data sources; generating, at the at least one server and based on the harvesting, a data network having nodes corresponding in part to the plurality of items and the plurality of reviewers.