signed up.
But how are you going to prevent people from signing up with 100 of emails and abusing your system? i could get proxy services and use 1000 proxies to setup 1000 accounts.
How are you going to fight that?
First of all, captchas and multiple submissions from the same IP are going to be the first deterrent. reCaptcha has a reputation for being secure and we prevent multiple signups from multiple IPs. If someone were to acquire a bunch of proxies, the captcha should deter some of them. Otherwise, we have some tricks up our sleeve to detect HTTP based proxies. Second, emails will be filtered out at the end for any disposable email services and other tricks I won't list. Third, after emails are sent out, you will have to type in your wallet address. Withdrawing to duplicate wallet addresses will not be possible.
Hopefully this should be enough... if you've got other suggestions we're open to hearing them.
You could ask users to list their bitcointalk username along their payout address once you release the coin. This way you can prevent spam and abuse of your system because no one is going to make multiple accounts on bitcointalk to get some coins.
if suggestion is good. maybe I can get some bonus coins?