Re: Prevent bot using shortener url on faucet

What's the advantage over having the user solve a captcha on the site itself?

Well, it's said that sometimes captcha can be failed to prevent the bot (RUMOURS).
So I think make it 2 captcha while gain more profit from the ads.

You can put 2 captchas on the main site. How does a url shortener stop bots?

Well cause some shortener url have their own way to stop bots, like AdFly, and I can earn more from them.