Optimatic is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Optimatic has better usage coverage in more websites categories. Including Arts & Entertainment, Games, Video Games, Internet & Telecom and 20 other categories.
ReferLocal is leading in Business & Industry, News & Media, People & Society, Travel and 3 other categories.
Optimatic is leading in most countries, including United States, Israel, United Kingdom, Poland and 10 other countries.
ReferLocal is leading in Japan.