No. The CR is very low and when you happen to get a conversion it will be for very little money. Do not bother with them. Try focusing on Tier 1 countries.uh guys, it seems my intent has been misinterpreted. Facebook "friends" requests are the kind I am talking. Given the section title, I thought that it would be fairly obvious but apparently I grossly miscalculated. If you wanted me to rephrase the question in a politically correct way, it could be rephrased as "Is facebook traffic from third world countries worth anything?" Sheesh. Some people get offended for no reason. I don't have a facebook for personal use.
Edit: Well, you can use 3rd world countries to lower your CR if that is what you want, but otherwise I wouldn't bother with them.