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 Business & Industry, Arts & Entertainment, Travel, Food & Drink and 107 other categories.
iWiW Widgets is leading in Humor, Games, Online, Financial Management and 20 other categories.
Foursquare Widget is leading in most countries, including United States, Russia, Brazil, Spain and 78 other countries.
iWiW Widgets is leading in Hungary and Romania.