I have noticed that some people write: "happens" as "happends". Is there a specific reason behind that? or it's just a typo?
http://search.yahoo.com/search?p=happends&fr=FP-tab-web-t&toggle=1&cop=&ei=UTF-8
http://search.yahoo.com/search?p=happends&fr=FP-tab-web-t&toggle=1&cop=&ei=UTF-8