The best thing to do is to do as Tim's friend has and create what's called an "email form" which will allow your visitors to type their messages into a form on your website. We've done the same here with our Contact Us
page. When visitors type their messages into your email form and send them, they are emailed to whichever email address you specify without having to share the email address with everyone.
If you put an email address on a web page, you are inviting computer programs who roam the Internet looking for email addresses to add yours to their lists which they use to send spam. I can't tell you how many undesirable emails I got before I realized how to prevent spammers from getting my email address! Please pm me if you would like help setting up an email form. I would be happy to do it for you.