Quite a number of online casinos give players a no purchase promotion just for signing up at their casino sites. These free casinos with no purchase required make it easy for players to join the online casino without the worry of possibly losing own money. There currently is quite a few casinos that are willing to give free casino money to players, so I do suggest downloading the casino software and trying out the casino games while it is totally risk free.
Since the article was written many casinos have stopped giving away money without a deposit. Partly due to mobile users as they are not able to credit on mobile devices and part is due to EU laws and not wanting to run different promotions per country.