After reading the article, I downloaded WeChat just to see what the author loves so much about it. Under "recommended contacts" it found 10 or so numbers that are apparently already registered with WeChat. But none of these numbers matched up with my friends at all. The only thing I can think is WeChat doesn't allow you to remove a number from your account if you get a new one. Or people are just lazy and don't bother.
After reading the article, I downloaded WeChat just to see what the author loves so much about it. Under "recommended contacts" it found 10 or so numbers that are apparently already registered with WeChat. But none of these numbers matched up with my friends at all. The only thing I can think is WeChat doesn't allow you to remove a number from your account if you get a new one. Or people are just lazy and don't bother.