how do you close a thread and why!!

[Dodgy_Keeper1]

I just want to know how and why people close a thread please dont give us a link just tell me please thanks.
how do you donate thanks.

 

[Mike]

You haven't donated so you can't.

Close thread.

 

[DMF]

Because a thread about the subject already exists and probably already has the answer you're looking for and by opening a thread you take up more memory on the server.

 

[Triv]

Pointless or off topic threads will be closed by moderators

this is both

 

[JP Woody]

Are you for real? Us green names (site bullies) close threads by ticking "close this thread" Reasons include, pointless, duplicate or just plain ***** like this one.