This report gives a very interesting overview of the current state and possible trends in open educational practices and resources. The report was compiled by the "Open e-Learning Content Observatory Services (OLCOS)" project funded by the European Commission.
One of the important messages of the report is that educational practices have to change considerably in order to make the best use of open educational resources. Barriers identified in the report include:
The report is published under creative commons and can be downloaded at: http://www.olcos.org/cms/upload/docs/olcos_roadmap.pdf.