Online casinos allow players to gamble through the Internet and in the comfort of whatever place they are in rather than traveling to wherever their favorite establishments are located. They are also known as Internet casinos or virtual casinos because of this.Just like their tangible “brick and mortar” counterparts, online casinos have ratings in the form of payback percentages and odds. Some of them even publish payout percentages on their sites, vaunting higher payback and higher frequency than their competitors.Payback percentage is defined as “is the overall percentage that a machine will return to the player in the long run.” This parameter is usually programmed into whatever game the virtual casino might be running and is set according to the owner’s specifications.Due to its very nature of being virtual and intangible, online casinos have trust issues with prospective and even regular clients. In light of this many casino owners have purchased and/or leased proprietary software made by reputable software entities like CryptoLogic Inc, Realtime Gaming, Microgaming, and Playtech. They then peg their online casino’s trustworthiness with the programming companies’ reputations and the stability of their random number generators.Online casinos are classified into three types according to how players interact with each other. These are:o Web-based online casinos – these types of virtual casinos do not require downloading files; they readily play through a wide variety of Internet browsers. Some of them require Flash or Java for a player to participate in games however. The advantage of this kind of casino is that sound clips and graphics needed for the game is streamed directly to the client over the Net. This dispenses the need to download relatively huge files.o Download-based online casinos – Participating in this type of casino involves downloading a client installer needed for players to access the virtual site. The advantage of this type of casino is that it generally runs much faster than Web-based ones. The disadvantage is that interested players need to download the client and the risk of installing malware from shady parties is very much real.o Live-based casinos – In this kind of casino, players can hear, see, and interact with other players. The Internet is just relatively an unobtrusive medium of communication as players participate in a real world environment.Online casinos may offer any one or all of the following gambling pastimes: online poker, roulette, blackjack, baccarat, craps and online slot games.