There is a name for such common errors as writing 'tow the line' instead of 'toe the line.'

Amazing and weird fact about Eggcorn: 

Did You Know? There is a name for such common errors as writing "tow the line" instead of "toe the line." The word eggcorn was coined when a linguist noted a woman who used that word instead of "acorn" and realized there was no word for the general phenomenon. source

• Interesting fact of the day
• List of incredible scientific facts
• Amazing facts about animals
• Random history facts