Every forum / community has one somewhere. The standard:
Welcome to Forums, a friendly forum to discuss___ in a friendly surrounding.
Your voice is missing! You will need to register to get access to the following site features:
Reply to discussions and create your own threads.
Our modern chat room. No add-ons or extensions required, just login and start chatting after you have posted 20 posts and have received 5 likes.
Access to private conversations with other members.
Less Advertisements! Members see fewer ads!
We hope to see you as a part of our community soon!
What does your sign up plea look like? Have you found any language that works better than others? Short and sweet, or more detailed? I really want to dial in a better message and try to turn more visitors into members.