Feedbackify is leading in Top 100K Sites and Top 1M Sites.
Feedbackify has better usage coverage in more websites categories. Including Business & Industry, Shopping, Travel, Accommodation & Hotels and 63 other categories.
Slashdot Widget is leading in Telecommunications.
Feedbackify is leading in most countries, including United States, Netherlands, United Kingdom, Australia and 25 other countries.
Slashdot Widget is leading in Romania.