The discussion that was going on was severely off topic, I am pretty sure there is a thread about how to link posts somewhere.
While I can understand wanting to try out how to link, in a topic asking for help on a situation isn't the best place.
Random Anything would be the place to try things out as that is like the wild west of the forums.
However, back to the flag, if someone has an issue with a post for whatever reason they can flag a post for review by a moderator which then can have action taken against it. This is a way for people to keep things on track or let us know if something not nice is being said. I will make a more informative post on this when we go back to work next week but need to talk to Lady P about a few things first.