Feedbackify is leading in Top 100K Sites and Top 1M Sites.
Feedbackify has better usage coverage in more websites categories. Including Business & Industry, Real Estate, Shopping, Travel and 65 other categories.
Slashdot Widget is leading in Religion & Spirituality, Telecommunications, Video Games, Games and one other category.
Feedbackify is leading in most countries, including United States, Netherlands, United Kingdom, Germany and 27 other countries.
Slashdot Widget is leading in Peru.