If you are interested in submitting your own work to SSRN there are instructions on the site complete with a video demo.
But it gets even better because SSRN now has a very cool free app for iPhone and iPad users which enables you to search the Archive’s over 260,000 papers (and growing) from anywhere. Papers can be emailed or viewed directely on your device. iPad users can download documents and annotate, etc. as well.
If you can’t get enough of SSRN, you can also subscribe to their twitter feed (twitter @ ssrn) and their blog.