I use this trick, and the result is very good... 
perl -le 'print map{printf"&#%03d;",ord}split//,$ARGV[0]' the@address.
+net

the@address&#04
+6;net

[download]
More information: google with words: "spam entities html".
Example: How to avoid spam
Encoding Mail
Email Address Encoder

In reply to Re: email address hiding by explorer
in thread email address hiding by sh1tn

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