There are autobots that roam the internet trying to pickup email addresses. These emails are then sold to spam companies for bulk mailouts.

A websdesigner can display your email on a website that will make it hard for these autobots.

One such example is shown here: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Autobots don't normally run javascript. So if you turn the Javascript off in your browser, you'll see what the autobot sees  - that is -  the email is not displayed.

With Javascript on, it looks and responds as a normal email - the email harvesters won't see it.

So if your email is being displayed on the internet - ask your webdesigner to hide it from the email harvesters.