You can see a link on my footer. that site will create chain of pages and all pages include invalid email addresses. So when an email harvesting bots from a spammer reaches that website that will fetch a huge number of invalid email addresses. So this will make the spammer to spend more resources to send emails and those email will not reach the destination since there is no such email addresses.

You can just add this link to your website also, since that will increase the chance of reaching more spammers to that web page.

So here is the link