I applaud your sentiment, but honestly, if you can afford Internet access, you can afford a one-time $1 (or even $5) sign-up fee. I'm sure people will come up

I applaud your sentiment, but honestly, if you can afford Internet access, you can afford a one-time $1 (or even $5) sign-up fee. I'm sure people will come up with some scenario where that's not 100% true, but I think it generally is. And you could probably devise alternate solutions for those exceptions. Some ideas off the top of my head: 1) The sign-up fee could be waived for anybody signing up with a .edu address. 2) Integrate with major library systems, and say the sign-up fee can be waived if you authenticate with a local library, enter your library card number, etc. 3) Offer a refund of the sign-up fee after 6 months of non-troll behavior. I don't know. But I do think the benefits of having some money on the line and some basic identity verification outweigh the risk of drowning out some voices.