I don't know which casinos are popular on this forum. My listing is based on my experience. These casinos that I listed pay players' winnings and also pay their affiliates for their effort. Which I can't say for some "popular casinos"
If these sites has been existing for as long as 20 years as you claimed then there at least needs to be one or two that people are very familiar with on here. Which brings further doubts as to whether they've been really existing for that long.