WARNING if you're using RSS feeds
If you're not validating your RSS feeds periodically, you may be making an error. One of my blog articles had an illegal character in it, and this bad character BROKE my RSS feed. It looked fine on-screen in my browser, but feed directories may have found this error to be a fatal one.
Make sure you CHECK your RSS feeds periodically. You can do that for free at:
Feed Validator for Atom and RSS
I'm not affiliated with them, but I do use their tool to check my feeds from time to time. Don't duplicate my error!
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