GSI Media is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
ReferLocal has better usage coverage in more websites categories. Including Business & Industry, Tourism, Travel, People & Society and 3 other categories.
GSI Media is leading in Shopping, Clothing, Children, Sports and 2 other categories.
ReferLocal is leading in most countries, including France and United Kingdom.
GSI Media is leading in United States.