At Rhythm 105 we get SIGNIFICANTLY more requests for freestyle than any other type of dance music.
Also be on the lookout for another series of "Freestyle Explosion" concerts at major (10,000-20,000 seat) arenas. Some cities I've heard included are Sacramento, San Jose, Phoenix, Anaheim (Los Angeles), San Diego, Phoenix, Las Vegas, Fresno, and Bakersfield. There have been some big crowds at these concerts in the past 2 years they have been running them, sometimes selling more seats than concerts by today's top 40/rock/CHR/CHR-Rhythmic artists.