The BPS Research Digest has discovered that all 36 psychology journals by academic publisher Sage have been made freely available until the September.
Some require a free registration to view, but some key journals are available right off the bat, including Personality and Social Psychology Review (the May edition is particularly good).
The BPSRD has a list of direct links to the other freely available journals.
Link to BPSRD on freely available Sage journals.
Mind Hacks 