Your question is probably rhetorical, but there's more than one answer to that riddle:
- On the Internet, one is not accountable for one's statements.
- Just about every idiot has access.
- Some people have too much time on their hands.
- There is a limited number of people to bullshyt with that we meet face-to-face on a daily basis. Internet forums increase that number greatly.
Of course, none of this applies to the folks in the Riddles forum.