To obfuscate an email address, simply encode it:
{exp:easy_email_obfuscator:encode}me@domain.com{/exp:easy_email_obfuscator:encode}
That will make your email address appear as
<em>me [at] domain [dot] com</em>
Which should fool most harvesters. To decode it again, insert the decoder JavaScript at the bottom of your page (just before closing the body):
{exp:easy_email_obfuscator:jsdecode}
</body>