Free Email Crawler

You should always test your sites whether you emails are catchable by spam bots.

  There are around 14.5 billion spam messages sent globally per day, don't let this include you.
  Surprisingly, scams and fraud comprise only 2.5% of all spam email; however, identity theft (which is known as phishing) makes up 73% of this figure.
  The most prevalent type of spam is advertising-related email; this type of spam accounts for approximately 36% of all spam messages.
  According to a study by the Radicati Research Group Inc., a research firm based in Palo Alto, California, spam costs businesses $20.5 billion annually in decreased productivity as well as in technical expenses.

Source (spamlaws.com)

Your website was catched by this bot? Simple way to hide your email using JavaScript:

<script language="JavaScript">
  user = "name";
  site = "domain.com";
  document.write('<a href=\"mailto:' + user + '@' + site + '\">');
  document.write(user + '@' + site + '</a>');
</script>

Here are some free email obfuscation services & scripts:

Services:

http://www.email-obfuscator.com/

Code:

BlowbackDesign/EmailObfuscation (JavaScript)

You can get your own copy of Simple Email Crawler here