How do I avert SPAMMNERS on my weblog?

Concern by BT: How do I stop SPAMMNERS on my site?
I just observed a site about games on-line, with spams of medicines against sexual impotence and other people items about sexuality on its comments. How do I avert it on my website ?

Best reply:

Reply by Eric A
You can reasonable it and approve of all content initial. Very time consuming….

What do you believe? Solution below!