Gamble without money isn't fun, and if we can get money in gambling we'll more fun although we shouldn't just use a little amount amount to gamble and if we lose there we'll not be regret. May be thats why i use little money to gamble.
Yeah, I tired to gamble on few sites which gave some free money to gamble and do not let withdraw in case of Win. This type of gambling is really bring as there is no feeling of loss. Even if you loss, you will lose nothing and no matter how big you win, you can't get that amount as it is just artificial money gambling.
This can be useful for Newbies who want to get a taste of it without actually using their money.