Friends: If you have missed this short paper in Nature when it was published a year ago, you may find it interesting: < http://www.nature.com/news/half-of-2011-papers-now-free-to-read-1.13577>. As much as 57% of papers are available in one form or the other to read at no cost. That was more than a year ago. Arun -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.