The following paper describes the design, architecture and use of a semantic search model in open innovation support systems. We explore the relationships between the user submitted content to improve interaction and simplify the current schemes of analysis of Idea Management System data. In order to accomplish this, we propose a model where users can build their own scenarios for business analysis. In particular, we present a methodology for collecting, organization and search of ideas submitted in a number of distributed public brainstorming systems. The description of our model is accompanied with a set of use cases.