] Google Scholar enables you to search specifically for
] scholarly literature, including peer-reviewed papers,
] theses, books, preprints, abstracts and technical reports
] from all broad areas of research. Use Google Scholar to
] find articles from a wide variety of academic publishers,
] professional societies, preprint repositories and
] universities, as well as scholarly articles available
] across the web.

Another good way to slice into Google is born. I just tossed a few queries at it with various combinations of terms like "intellectual property", "spontaneous sociability", "social capital", "social network", reputation, scarcity, meme, etc. A number of interesting looking papers were turning up that would never have made it into a standard Google search. Much more inclusive and with a better UI then diving into individual repositories like citeseer.

Google Scholar