In the databases listed below, try search strings that combine the term "social networks" with business topics of interest to you, for example, "social networks AND marketing," or "social networks AND economics." You may want to attempt a search using the name of a specific social network, such as "facebook AND advertising."
These databases might be helpful:
Some of these databases are reserved for University of Illinois faculty and student use for academic purposes only. To inquire further, please contact: bis@library.illinois.edu
