User blog comment:LondonDauntlessCorvair963/All this Brony Hate... Ugh/@comment-14189898-20130911002229/@comment-238068-20130911113616

[http://lifehacker.com/5953755/what-exactly-is-freedom-of-speech-and-how-does-it-apply-to-the-internet You are using a private service. You have no right to free speech.] I'm not American, but a quick google easily shows that the First Amendment says "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."

For example, by signing up to Wikia, you have agreed to their terms and conditions, which do not allow you to say whatever you want.

TL:DR - Freedom of speech doesn't apply.