Sorry to side track - but I think you have underestimated the growth of soccer in the US. MLS is way ahead of MLL and Arena Football.
NOTE: I'm not dissing MLL and AFL - I'm all for the appreciation of any type of sport, but MLS has grown quite a bit.
MLS is not up there with the NFL, NBA, NHL or NASCAR but it's doing Ok for example:
Total attendance for MLS in 2011 was more than 5.5 million with an Average of nearly 18,000 per game -
http://www.sbnation.com/soccer/2011/10/24/2511576/mls-attendance-up-2011-major-league-soccer
Total attendance for MLL in 2011 was about 231,000 with an ave. of about 6,500 (not too bad)
http://www.pointstreak.com/prostats/attendance.html?leagueid=323&seasonid=6756
Total attendance for AFL was about 1.3 million in 2011 - they don't list an over-all average and I don't have time to calculate one - but I'll guess it's about 8000-10,000 per game based on the chart:
http://www.arenafan.com/history/?page=yearly&fpage=attendance&year=2011&histleague=1
MLL will only have 6 games on ESPN this year with the rest shown only online streaming ESPN 3 and 14 games on CBS.
As far as I can tell, AFL is mostly broadcast on the NFL Network with some games being picked up by local broadcasters.
While MLS just inked a 3-year $10 million deal with NBC/NBC sports to broadcast soccer games, covering 45 games, and also has an $8.5 million deal with ESPN to broadcast 20 games plus the MLS all-star game and Final.
http://goal.blogs.nytimes.com/2011/08/10/m-l-s-and-nbc-sports-announce-new-tv-deal/
Many of the MLS have their own soccer specific stadiums built that they own. for example:
http://www.homedepotcenter.com/
http://www.redbullarena.us/arena/default.aspx
As far as I can tell most MLL teams are playing at mostly university stadiums. At one time one of the MLL teams played at the stadium and owned by the MLS's Columbus Crew.
Not hating. Hope MLL keeps growing. Lacrosse is a good sport.