I signed up for an ICO the other day and saw that they were giving away quite a lot of tokens for just signing up with Twitter and Telegram. How do they benefit from this? Do they just want more followers or do they want to get rid of tokens? Or is it maybe just a scam?
That's most effective and the easiest way for new projects to advertise their tokens and to attract a lot of new users. Thousands of new projects used that is proven and well-tested system. You get them for free, and when you start using coins - you become part of the system.