Why not. I cannot see any problem of using an English name in the tag and as a part of email address.
回复:请教:关于名字
所有跟帖:
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                    是我多想了?呵呵,可能考虑太多legal issue了
                     -fluffykitty- 
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                        01/08/2013 postreply
                                                11:51:44
                    
                    
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                    回复:是我多想了?呵呵,可能考虑太多legal issue了
                     -panlm_- 
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                        01/08/2013 postreply
                                                11:55:45
                    
                    
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                    谢谢:)
                     -fluffykitty- 
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                        01/08/2013 postreply
                                                12:07:41