Foursquare Widget is leading in Top 10K Sites and Top 1M Sites.
Foursquare Widget has better usage coverage in more websites categories. Including Arts & Entertainment, Travel, Food & Drink, People & Society and 105 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, Italy, Canada and 66 other countries.
Viadeo is leading in France, Morocco, Tunisia, Algeria and 21 other countries.