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, People & Society and 100 other categories.
iWiW Widgets is leading in Adult, Humor, Finance, Games and 17 other categories.
Foursquare Widget is leading in most countries, including United States, Brazil, France, Russia and 68 other countries.
iWiW Widgets is leading in Hungary and Denmark.