This is a cool feature, but I feel like it's open to abuse and spam. Which makes me wonder, do you have plans for handling moderation and spam prevention in the future?

When a website is small, this is not a problem. As the website becomes popular, it will attract the lowlifes who have nothing better to do with their lives other than scamming, spamming, and trolling. I would hate to see this site overrun by those people.