No, people post so much that a new page is made before anyone can really read the post with the server info.
Example:
You want to join a lovely Terraria server. You don't see anyone at first glance.
You post "Hey, anyone have a server up?" and somebody posts one for you. Simple as that.
Now, with Minecraft, there were tons of topics that were just filling up the Games sub forum. I was saying not to do that again with Terraria.
Do not act like it is impossible to get people to join your server without making a topic. It is completely possible.