Like any artful skill, it goes by many names: stealth, free and wild to name a few. Each have a slightly different meaning, but they all refer to one simple concept - sleeping in the wilderness for free. Apart from being a stellar money-saver, wild camping is an excellent method to connect with the landscape you're travelling through in a way most tourists completely miss.
While it's possible to bag a wild campsite almost anywhere, putting up your tent at nightfall and leaving early in the morning, there's more skill involved in finding a picturesque place to call home for an evening or two. But with a little experience, finding a beautiful wild camp can be easier than locating a traditional campsite - especially in countries with under-developed or non-existent tourism industries.
First and foremost, start early. The best wild camps are rarely waiting just off the main road, so chances are strong you'll have to do a bit of hunting. If you wait until dusk, not only will you feel rushed, but you won't get to enjoy the surroundings once you've set up. It may take a few tries to find the right place, but your efforts will not go unrewarded.