Citeseer (Score 1)

I have always like the basic idea around Citeseer.

"CiteSeerx is a scientific literature digital library and search engine that focuses primarily on the literature in computer and information science. CiteSeerx aims to improve the dissemination of scientific literature and to provide improvements in functionality, usability, availability, cost, comprehensiveness, efficiency, and timeliness in the access of scientific and scholarly knowledge.

Rather than creating just another digital library, CiteSeerx attempts to provide resources such as algorithms, data, metadata, services, techniques, and software that can be used to promote other digital libraries. CiteSeerx has developed new methods and algorithms to index PostScript and PDF research articles on the Web. ..."

The basic issue for you would be that is was made to focus on Computer and Information sciences as it currently is implemented.

http://citeseerx.ist.psu.edu/about/site

In the short term, this is may not be valuable for you. In the long term, I think this can be the basis for most or any academic (or even non academic) research literature.