In order for interested players to find your event, you will need to answer the questions of Who, What, Where, and When. Thus, I recommend that in your thread title you list the game/event, followed by the location, followed by the date the event will be held. For example:
Dystopian Wars, Alexandria VA, 13 April
The rest of the information, such as point level, start time, exact location, etc would then go into to the message body. I'm hoping that sticking to a common format will make it easier for users to glance through the game listing to find one that interests them!