To avoid ending on a spammer's mailing list when you post to a web forum or a newsgroup, you can

• disguise your email address by inserting something obvious into it.
  

If my email address is me@example.com, I can modify it to read me@EXAdelete_thisMPLE.com, for example. I will not get spam at that email address since all messages to it will bounce, but people who want to send me an email can still do so after they remove "delete_this" from the address.

 

Obscuring your email address does make sending mail a bit more difficult. But this is not always a disadvantage.

 

Another solution to use email obfuscation service such as SpamSpan. Services like this obfuscate your email address and make it next to impossible for bots to harvest your email address.

Thank you for your useful advice!