I am about to open up registrations to my open-source meetup.com alternative, but am worried about the legal side.
What sort of things should I put in the Terms and Conditions, and do I need them to explicitly click "I agree" before being allowed to click "Register"?
If you are worried about the legal side of your Terms and Conditions, shouldn't you hire an attorney to review yours??? Free legal advice here is not actual legal advice.
Second, take a look at your competitor's Terms and Conditions. How does yours differ?