You can start an argument by making a statement. People will be able to interact with the statement by choosing different ways to challenge or support it.
WARNING: This statement will be viewable to anyone with an internet connection without any warning as to its content. Don't write anything that would be off limits in an opinion article from a mainstream news source. It can be silly or non-factual, but it shouldn't cause personal harm or prompt authorities to shut the website down.
It's possible that they may not agree with their own statement because, for example, they changed their mind or were just playing devil's advocate.
To show you're not a robot, answer the following question:
What is 7 + 1?
What is 4 + 9?
What is 9 + 9?