Back Access 12 months late is too little, too late to benefit research
access, usage or progress. This is just another untoward side-effect of
the flawed NIH Public Access Policy. NIH has now given ACS a pretext for
feeling civic-minded in not giving its green light to immediate
self-archiving!
The cure for all this dithering will be institutional self-archiving
policies. It doesn't depend on publishers; it never did. It depends
entirely upon researchers, their institutions and their research funders.
http://www.eprints.org/berlin3/program.html