Foursquare Widget is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Foursquare Widget has better usage coverage in more websites categories. Including Arts & Entertainment, Travel, Food & Drink, People & Society and 102 other categories.
Viadeo is leading in Business & Industry, Career & Education, Marketing & Advertising, Education and 31 other categories.
Foursquare Widget is leading in most countries, including United States, Russia, Brazil, Italy and 66 other countries.
Viadeo is leading in France, Morocco, Tunisia, Cote d Ivoire and 29 other countries.