I don't personally use FB, but my wife has a business with a heavily liked Facebook page. She has made the same observation about many of the likes coming from Egypt, Philippines, etc.
From what she's told me, when you "Like" something you can tell your friends, but you have to be friends with them anyway in which case you can already send them messages. Similarly, you can post on the company's page, but you can already do that without "Liking" it (and her page doesn't get very much spam - maybe one message every 2 days or so). So it doesn't sound as though liking things gives you any ability to send messages to people that you can't already send messages to. Please correct me if I'm wrong.
I'm very curious to know what motivation there could be for people to create fake accounts and "Like" things with them. It's ridiculous that the BBC article makes no attempt to even speculate on the obvious question.