Amazon Payments is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Amazon Payments has better usage coverage in more websites categories. Including Shopping, Business & Industry, Clothing, Home & Garden and 110 other categories.
Flattr is leading in People & Society, Arts & Entertainment, Computer & Electronics, Internet & Telecom and 67 other categories.
Amazon Payments is leading in most countries, including United States, Germany, United Kingdom, Japan and 66 other countries.
Flattr is leading in Sweden, Russia, Czech Republic, Switzerland and 37 other countries.