A free signup bonus casino offers new players something they cannot resist. Many of them use the welcome offer to practice on the games or get to know the online casino properly. This way, they will not be unfamiliar with the features. The new players can also strategize better after using up the freebie because they got to play without spending.
Most of them also have a match bonus that will double the amount of your deposit, and that is how they welcome new players. Make sure to read the terms and conditions before signing up.