It won't be big until athletes can start making serious money playing it.
Bit of a chicken and egg issue there. What the the LA Galaxy paying Beckham do for the sport?
I realize you are just trolling in the thread and don't really care about the facts but in case others are more interested I will answer your question. MLS Specific:
Pre Becks: Expansion Fees were $10m per team
Post Becks: The NY expansion team just went for $100m last year
Pre Becks: MLS had to pay money to be on TV
Post Becks: MLS just signed a $90m a year TV contract with ESPN, Fox and Univision
Pre Becks: Stadiums were relatively empty across the league
Post Becks: The league is closing in on 19k average per game now. Teams like Portland have not played to an empty seat since they started. Seattle averages over 40k a game, KC plays to standing room only crowds, Toronto is expanding their stadium by almost 40% to handle demand.
Soccer Specific:
Pre Becks: WC TV contract for 2002 and 2006 went for $40m
Post Becks: WC TV contract for 2018 and 2022 went for $1Billion
Ratings for the EPL are strong and growing every year
Ratings for Liga MX continue to be amazing, bigger than MLS or EPL
Ratings for the Champiobs League games on Fox continue to draw excellent numbers even with horrible time slots
Attendance for non MLS games has sky rocketed since Becks came over. US games, Mexican games and a host of European country's and clubs play to huge audiances
Ratings for the WC have grown significantly since Becks. They will peak this summer.
In short, the sport before 2006 (pre Becks) and what it looks like today could not be more different in terms of every measurable item. How much of this can be attributed to Becks alone is imposdible to guage but MLS would sign that deal again in a heart beat knowing what it did for the league and the sport.