I don't really think I would enjoy using those apps more than the single-purpose sparse-content apps that are the norm in the US/EU market. However, I fail to see in which way those are more fraudulent or scam-ish than S.V. apps. About the only difference in that regard that I see on that list is that those apps integrate stores where you can buy stuff, in addition to ads trying to get you to buy stuff. Does the fact that the Ad link on the FB or Youtube app take you out of the app and into Amazon.com make it any more "legitimate", per se?

I do see some security implications with the whole "lots of custom browsers connecting to random open Wi-Fi hotspots", though.