It seems the #WFTDA are happy to spread the word regarding their recent review of referees. Obviously the WFTDA are wanting to use the best and this is rightly so.
WFTDA Championships Officials are selected through a review of applicants’ experience and qualifications and performance in 2015 Playoffs, in order to staff Championships with the most highly trained and experienced Officials. GTOs manage sanctioning, provide Games policy and procedure oversight and support teams with competitive needs throughout the tournament.
The WFTDA is pleased to announce the skating Referees, Non-Skating Officials and Games Tournament Oversight officers (GTOs) for the 2015 International WFTDA Championships in Saint Paul, Minnesota.
I do believe more information can be found here: http://wftda.com/tournaments/2015/officials