This is something that I've thought a good idea for a while; now, it seems to be
taking shape:
SPARC Europe (Scholarly Publishing and Academic Resources Coalition), a leading organization of European research libraries, and the Directory of Open Access Journals (DOAJ), Lund University Libraries today announced the launch of the SPARC Europe Seal for Open Access journals. Growing numbers of peer-reviewed research journals are opening-up their content online, removing access barriers and allowing all interested readers the opportunity of reading the papers online, with over 3300 such journals listed in the DOAJ, hosted by Lund University Libraries in Sweden.