While you’ll be able to look around and find a good selection of places that’ll offer these as welcome bonuses, most won’t. In many cases, they’re barred behind incentives offered to existing members.
As a result, knowing these bonuses isn’t going to help you much in deciding what casino to go to. After all, if you want to get this bonus, you would already have to be a member to redeem most of them.
Not only that, but you ought to be using these bonuses into your strategy. Other bonuses like the standard sign up bonus might have to push you to put money up front, but it’s more lucrative for you than getting one no deposit bonus. Especially since most casinos will offer multiple deposit bonuses.