- When the numbers don't add up
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Help Using - Fighting Spam

Email communication, though integral to the functioning of MathLessons, leaves us open to
spammers, scammers, and worms.
We encourage you to use our "Anonymous contact form" when posting an ad. This will ensure that only real people (no spam robots, or fake people) are answering your ad.
We devote a LOT of time and energy to combatting these evils, but it's a never-ending battle.
If you're seeing a new outbreak, please let us know at
If you have ideas on how we can do a better job, please send us an Email.