Use Facebook or an email
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Once at your "User Control Panel". Click on the Tab called "Board Preferences" And then on "Edit Notification Options".
Now you can make it more complex. Say I wanted to find all the posts with Backup in them, but none of the mosts that had the word Mustang in them.
You can do that by adding a '+' in front of the words you want to be in your results and a '-' in front of the words you do not want.
You can even narrow those results more, by adding in an Author. There are three ways to add in an author.