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http://help.instructure.com/forums/20630178-extension-integration-library
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http://wordpress.org/extend/plugins/profile/oltdev
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http://tierra-innovation.com/wordpress-cms/category/plugins
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http://wordpress.org/extend/plugins/section-widget
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http://plugincheck.bravenewcode.com
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http://blogs.ubc.ca/development/plugins
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http://www.ubermind.com/products/maperture.php
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http://weblogtoolscollection.com/pluginblog