Yes, it's a good way to make money but there are better ways through trading but I'm assuming a lot of people don't want to spend the extra time learning all about trading so if that applies to you then you better buy bitcoins, hold on to it with the hope of its price rising and then selling back for more money.
yeah you can make money too much faster through trading in short time there is a lot of people buy bitcoin in huge amount then hold its for the short time investment and they get a good profit from bitcoin trading so its really a good way to make money.