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 # 14.4 User validation
 
-In the process of developping web applications, user authentication is a problem which developers frequently encounter. User login, registration and logout, among other operations, as well as general authentication can also divided into three parts: 
+In the process of developing web applications, user authentication is a problem which developers frequently encounter. User login, registration and logout, among other operations, as well as general authentication can be divided into three parts: 
 
 - HTTP Basic, and HTTP Digest Authentication
 - Third Party Authentication Integration: QQ, micro-blogging, watercress, OPENID, Google, GitHub, Facebook and twitter, etc.