Off-topic: The ℅ typo for % (which is due to an Android keyboard layout if I und...

grzm on Feb 4, 2017 | parent | context | favorite | on: Vancouver house prices are falling

Off-topic: The ℅ typo for % (which is due to an Android keyboard layout if I understand correctly) always catches my eye. What other typos like this are people aware of? What can be done to prevent them?