Nice to meet you, Bree! I really, really love your name! I hope you enjoy RpN! It's full of friendly and talented people and I'm sure you'll fit right in with them in no time! I'm always here to help if you need me!
The use of the rule is to ensure that no bots or rather nasty people begin spamming advertisements, malicious links and other such things. It's all designed to keep you happy, basically.