Re: "social networking service Formspring"
Your link also says:
As with any other platform that gains its attraction for its anonymous features, Formspring’s users rushed in, but as the user base increased so did the problems that were associated with anonymity. Cyberbullying came to the level that several teen suicides were linked to the bullying that took place on the site.
The startup tried to remedy by collaborating with the MIT Lab to search for a way to discourage cyberbullying. Eventually, the site had to limit the anonymity feature but that meant that it would lose its appeal, users started decreasing and growth simply froze.