Nice — a new search-tool for open courseware called Folksemantic. It seems an awkward name, and the closed presentation of results is also rather awkward (no direct URLs, framing of linked pages). But it’s a useful discovery tool, and will certainly go in the JURN guide.
There’s also no option to “never show me any of the 15,767,677,465 U.S. High School lesson-plans”, although there is a “show only courses” filter. Which then seems to leave you entirely with results from OU OpenLearn and MIT’s OCW, at present. But Folksemantic has funding from the National Science Foundation and the Andrew W Mellon Foundation, so it seems set to add new features in future.