The closest thing this site would get to it's own commercial would be FK advertisements on FK. Which would be useless and redundant. Haha.
It's about $200 to $1,500 for a 30 second LOCAL commercial.
Super Bowl 30 second commercial: Roughly $3.5 million.
National commercials (non-super bowl): Anywhere from $100,000 - $450,000
Before you pay for the spot, you got to think about production costs as well.
It's safe to say ForumKorner.com would be aired 1 time, for 15 seconds, somewhere in Indiana or Idaho where no one lives.