Apropos of my post on ungating research, Scott McClurg suggests Academia.edu. Its purpose is:
bq. Academia.edu helps academics answer the question ‘Who’s researching what?’:
bq. – You can find people with similar research interests to you
bq. – You can keep track of the latest developments in your research area – the latest papers, talks, blog posts and status updates
bq. – You can create an easy-to-maintain academic webpage, listing your research interests and any papers you have written.