Thanks for the feedback. Honestly, I'm not very sure myself and I'll have to wait and see. The votes could be gamed perhaps (multiple accounts etc.), but I could restrict voting capabilities to say, email/phone verified accounts, aged accounts or minimum karma (or a combination of all those). Like I said, we'll have to see how it evolves.
Aged accounts won't stop anything, and Karma probably won't stop anything (afterall a person can buy karma-farmed reddit accounts), and I'm not going to give a phone number to try the service out. I hope you figure it out, and I wish you success.
You state this like an obvious, well know fact or a law of nature. I don't think it is any of those.
Furthermore there is more advanced solutions like connecting to other accounts like at least one service did (name slips my mind): paste this proof in your Twitter (or HN, or reddit or stackoverflow or whatever) bio and type your twitter (or whatever) handle here and we will verify it.
Yes, people can sell their accounts but there are only so many active 10 year old twitter, HN, reddit accounts ib good standing (and once they are used they are used).
Once it actually get a little bit hard people will start to care more about their accounts. Oh, and for a single individual it gets hard fast.
