ClickDensity is leading in Top 100K Sites and Top 1M Sites.
ClickDensity has better usage coverage in more websites categories. Including Business & Industry, Shopping, Classifieds, Autos & Vehicles and 83 other categories.
FriendFeed is leading in People & Society, Arts & Entertainment, News & Media, Internet & Telecom and 57 other categories.
ClickDensity is leading in most countries, including United States, India, United Kingdom, France and 46 other countries.
FriendFeed is leading in Russia, Italy, Turkey, Japan and 23 other countries.