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, TV & Video, Games, Video Games and one other category.
Feedbackify is leading in most countries, including United States, United Kingdom, Netherlands, Germany and 25 other countries.
Slashdot Widget is leading in Indonesia.