I like this rule, so long as you don't get over the top with it. You can't have young kids and teens on here, and expect no little white lies.
I agree with getting people to not make up stories about their 16hh Warmblood Stallion who won the Olympics but got giving to you for free because you're such a talented rider.. :P But if they say two small contradicting things, they shouldn't get in trouble.
Keep up the good work Mods.
It is not enough for a man to know how to ride; he must know how to fall.