What is the social "search efficiency" that the current publicly available filtration technology allows in social networking sites? 

The general aim behind my proposed research project is to attempt to  measure and address the level of social "search efficiency" that the current publicly available "search filtration" technology allows - in other words, how feasible is it for a given person to quickly locate specific types of persons based on the common criteria such as in terests, personality or physical appearance. Furthermore, this study could serve as the basis for future research with more advanced and detailed analysis that could hopefully be used by software and web developers to improve the publicly available search tools.