Answer by  
                                                                                          km8738 (1917)
                                                            
                          
                          
                                                          Absolutely. There is no real reason to keep Windows Messenger installed if you do not make any use of it. It isn't considered a program that interacts with very many other programs or has any programs that are dependent on it, so you shouldn't see any adverse effects on your system after you uninstall it.