All casinos listed on this site are licensed. If you choose to play at another play slots, search the site for their license details - most licensed casinos display or at least note their license on the site.
Taking a card is also known as slots or taking a hit. If a player doesnt want another card they would just wave their hand palm down over their cards. Not taking another card is known as standing.
Over the last few years with the rapid growth of personal computers, more and more gambling software has been developed. The software ranges from best slots with no educational value, to some really powerful training programs.