Saw this earlier today, and thought it was an interesting opinion from the Houston Dynamo's team President Chris Canetti
http://www.chron.com/sports/dynamo/a...ng-3554333.php"MLS is going to become the second most popular sport in this country at some point, behind the NFL. People don't believe me. They don't want to accept it. But I'm in the middle of it. I'm seeing what happens. We're thinking big here. We're not happy just being stable."
I'm sure he's basing his opinion on recent trends, in terms of TV contracts, TV ratings, and attendance figures. However, I wouldn't be surprised if people close to NASCAR had the same thoughts in the late 90's, when their sport was growing by leaps and bounds.
IMO, it'll take at least one more generation of fans growing up following and playing the game, for the MLS to grow into the country's 2nd most popular, and profitable, sport.