Dual Open-Access Strategy
GREEN (95%):
Publish your article in the toll-access journal of your choice (currently 23,500, >95%)
http://romeo.eprints.org/stats.php

OR

GOLD (5%):
Publish your article in an open-access journal if/when a suitable one exists (currently 1500, <5%)
http://www.doaj.org/

and

deposit all your articles
-- GREEN and GOLD --
in your own institutional repository

http://www.publications.parliament.uk/pa/cm200304/cmselect/cmsctech/399/39903.htm