<p>Please see this question on meta.stackoverflow: <a href="http://meta.stackexchange.com/questions/28454/does-retagging-a-question-count-as-an-edit">http://meta.stackexchange.com/questions/28454/does-retagging-a-question-count-as-an-edit</a> and this question: <a href="http://meta.stackexchange.com/questions/442/what-kind-of-edits-contribute-to-the-editor-badges/445#445">http://meta.stackexchange.com/questions/442/what-kind-of-edits-contribute-to-the-editor-badges/445#445</a></p>