Feedbackify is leading in Top 100K Sites and Top 1M Sites.
Feedbackify has better usage coverage in more websites categories. Including Business & Industry, Shopping, Real Estate, Travel and 66 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 33 other countries.
Slashdot Widget hasn't got a lead over Feedbackify in any country.