A sign-up bonus refers to an offer that casino gives to new customers once they sign up on their site. Casinos use these bonuses to attract new customers and provide them with some funds to start betting. Sign-up bonuses are not withdraw-able and should be used within a timelimit, depending on the casino.
Czech Republic or Czechia is a Central European state, and the producer of some of the best beers in the entire world, competing even with Germany. Most gambling is legal and legislation on mobile casinos is pending. At the moment the Czech are free to play in international mobile casinos.