Avoid Spammers, They are spoiling the forum

These days there are many unrelated posts in C# forum. which should be avoided.I know there is spam button, which i think its a gud step, But still there is a need that these users to be blocked/restricted in C# Corner activities. Here is one such link i found today. http://www.c-sharpcorner.com/forums/isharp39m-a-hard-liner-when-is-shows-correspondence-to-expert-li