Facebook as education in Kenya

I read this article 　from bbc.
Joel Mwale, who runs his website named Gigavia (like Facebook), agree with adopting network services into school. Therefore his website is contained the area where students and teachers can share their materials or exchange their ideas on online. He wants to spread this idea to East Africa.
As this article states, students tend to addict to do chat with their friends with using their cellphones or computers, so some people disagree with this idea because students can be disturbed by these things and they cannot concetrate on their studying if they use neetwork during their studying. On the other hand, others says that teachers can share their papers easily and students might not need to bring textbooks instead of bringing laptops. I also think students can approach the society easily by using network and also they can ask questions to their teachers without hesitating, which are good for them. They might lose communication skills, though. Therefore, it is important for teachers to consider balance between using network and papers during class.
Now, i have two questions to class.
What do you think about using network(computer) during class ? if you are teachers at junior high school, what do you think is the good way of make your students concetrate on their studying?