Articles published in professional journals are often not readily available online, particularly as journal publication has been taken over by commercial publishers. Many blog readers will undoubtedly have looked for an article and found only an abstract online, as per the accompanying picture.
But change is (hopefully) coming:
Friday, August 2, 2013
UC Office of the Academic Senate
Open access benefits researchers, educational institutions, businesses, research funders and the public by accelerating the pace of research, discovery and innovation and contributing to the mission of advancing knowledge and encouraging new ideas and services.
Full release at http://senate.universityofcalifornia.edu/open_access_press_release_2013.pdf
Other information at http://osc.universityofcalifornia.edu/openaccesspolicy/OA_FAQ.pdf
Some folks are very appreciative: