Any owner of a website, which provides for the registration of users, or can post comments or sooner or later confronted with this unpleasant phenomenon as an invasion spambots.

If the resource is in the databases of spammers, then start it every day hundreds of registered boats that leave spam messages. Particularly susceptible to the scourge of various online forums. Naturally, site owners are beginning to struggle with this phenomenon, because the problem is not just that much more complicated work on moderating resource, but appears more one unpleasant moment - a significant increase in load on the server, which usually leads to additional costs for the maintenance of the resource .