OpinionLab is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Viadeo has better usage coverage in more websites categories. Including Business & Industry, Career & Education, People & Society, Arts & Entertainment and 74 other categories.
OpinionLab is leading in Travel, Tourism, Finance, Transportation & Logistics and 32 other categories.
OpinionLab is leading in most countries, including United States, United Kingdom, Canada, Germany and 46 other countries.
Viadeo is leading in France, Morocco, Belgium, Tunisia and 29 other countries.