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One of the weaknesses that spiders of all kinds suffer from is an inability to
process scripts. Adding a small snippet of Javascript in place of an email
address effectively renders the address invisible to spiders, while leaving it
accessible to your visitors with all but the most primitive web browsers.
In the three examples below, simply substitute your username (the first half
of your email address, everything before the @ symbol) and your hostname
(everything after the @ symbol). To use the scripts, just insert them into
your page's HTML wherever you need them to be displayed.
Example 1:
Creating A Spam-Proof Mailto Link
This snippet of code creates a clickable link that launches the visitor's
email application, assuming that their system is configured to work with
mailto links. You can replace the link text with your own message, but see
example 2 if you want to display your email address as the link text.
<script language=javascript> <!-- var username =
"username"; var hostname = "yourdomain.com"; var linktext = "Click Here To
Send Me Email"; document.write("<a href=" + "mail" + "tox" + username + "@" +
hostname + ">" + linktext + "</a>") //--> </script>
Example 2:
A Spam-Proof Mailto Link With
Your Email Address
Showing
Some visitors won't be able to use a mailto link, and will instead need to
read the email address. No problem, just use the snippet below instead.
<script language=javascript> <!-- var username =
"username"; var hostname = "yourdomain.com"; var linktext = username + "@" +
hostname; document.write("<a href=" + "mail" + "tox" + username + "@" +
hostname + ">" + linktext + "</a>") //--> </script>
Example 3:
Display Your Email Address Without A Mailto Link
Sometimes, you just want to give your email address without making it a
clickable link - here's a snippet that accomplishes just that:
<script language=javascript> <!-- var username =
"username"; var hostname = "yourdomain.com"; var linktext = username + "@" +
hostname; document.write(username + "@" + hostname) //--> </script>
Technique #2:
Hide Behind A Contact Form
Sometimes the sheer volume of email from real visitors can become a burden. In
this case, a simple solution is to remove your email address from your site
entirely, and use a contact form. There are dozens of free ASP, Perl, and PHP
scripts available online that will allow your users to fill in a form, and
send you an email. Many hosting providers offer this service for free to their
customers.
A contact form can enable you to deal with a higher volume of mail by allowing
you to pre-sort different types of messages. This is easily accomplished by
creating a drop-down menu with different options (e.g. customer service,
billing, tech support, etc.) that will populate the subject line of the email
message.
I hope that this tutorial has given you a clear
understanding of how to protect your website, and your email address, from
spam-bots. If you have any questions about this article, feel free to contact
me through my website. The (spam-proof) email link is at the bottom of my home
page, right after the "P.S."
I wish you success...
About the Author:
Dan Thies has been helping his clients (and
friends) promote their websites since 1996. His latest book, "Search
Engine Optimization Fast Start" offers a simple, step by step plan to
increase your website's search engine traffic.
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Important Notes
There are also other alternative methods to lure the spambots harvester into
collecting tens of thousands of totally fake useless email address by wasting
its time sending messages to non-existing emails, check it out at:
http://ww.monkeys.com/wpoison/
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