1. A system for managing advertisement placement over a network, comprising: an orchestrator component, executed by a processor, that is configured and arranged to determine an initial set of network addresses to conduct a search for advertisement related content, and to determine a selection criteria to select advertisement related content from a result of the search; and a keyword arbitrageur component, executed by the processor, that is configured and arranged to determine a similarity ranking of the selected advertisement related content, and to, based at least in part on the similarity ranking, manage a keyword purchase to obtain a benefit from a price differential between a price offering for a keyword associated with advertisement related content and a payment for the keyword or a related keyword.
4. The system of claim 1 , further comprising: a crawler component coupled to the orchestrator component to conduct the search.