This week, have your say on the 2007 MLS Cup play-offs. Which of the eight teams in the conference semi-finals will come out on top and be crowned Major League Soccer champions in USA? has decided to give fans even more of a say. Every week, the official FIFA website will throw a subject out for discussion; a topic that supporters are all talking about. Then it is up to you to get the debate going. Footballing principles apply of course: play fair and keep it clean and sensible.

Our latest topic is the destination of the 12th MLS Cup title. With the regular season reaching its conclusion at the weekend, only eight teams remain to battle it out in home-and-away conference semi-final ties with the hopes of reaching the single-game conference finals and then the one-off MLS Cup in Washington DC on 18 November.

The conference semi-final series look wide open with 2007 Open Cup winners New England Revolution taking on Juan Pablo Angel and Claudio Reyna's New York Red Bulls in a tasty local affair. The other semi-final meeting in the East pits Chicago Fire, who pipped Los Angeles Galaxy and their golden boys David Beckham Beckham and Landon Donovan for a play-off place, against DC United and Luciano Emilio, the regular season's top points scorers and leading marksman respectively.

Over in the West, Chivas USA will meet Eddie Johnson and his Kansas City Wizards after finishing as surprise table toppers in the conference. The second series will be an all-Texan affair between Carlos Ruiz's FC Dallas and defending MLS champions Houston Dynamo, who will be counting on the playmaking of Canada's Dwayne De Rosario and Hawaiian goal sensation Brian Ching.

The question is: who will reign supreme? Will Chicago roar after leaving it late to qualify for the post-season with Cuauhtémoc Blanco and Paulo Wanchope heating up, or will the Revs finally break their title hoodoo after three fruitless MLS Cup appearances? New York's Angel and Co look a dangerous outfit, too, while in the wild, wild West anything seems possible. The play-offs in the US top flight tend to offer up exciting and tension-fuelled contests. And with everything on the line, could 2007 possibly be any different?

It is over to you. Click below on 'add your comment' and have your say.