If you're a scientist then you've probably heard of Nature Precedings,
a place for researchers to share pre-publication research, unpublished manuscripts, presentations, posters, white papers, technical papers, supplementary findings, and other scientific documents. Submissions are screened by our professional curation team for relevance and quality, but are not subjected to peer review. We welcome high-quality contributions from biology, medicine (except clinical trials), chemistry and the earth sciences.
Turns out, from a comment made by Hilary Spencer over at Jennifer Rohn's weblog, that pre-publication research includes stuff that didn't work.
I am eyeing my thesis, curiously and thoughtfully.

Comments
Absolutely! Post your work no matter the outcome - it can be useful to somebody. Precedings gives you a nice formal citation with author list and DOI that anyone can use to cite your work.
Posted by: Jean-Claude Bradley | May 23, 2008 07:27 PM
Yes! You know you want to! And all the usual things we say, from the usual ringleaders :)
Posted by: Cameron Neylon | May 23, 2008 08:02 PM