According to an Interpromedya research in Turkey, Facebook is used by 87% of the Internet users in Turkey.
According to the same November 2010 research, people spend 9 hours a week on average at social networks. However only 25% of the internet users use online shopping.
Although the respondents told that they use he Internet mostly to read newspapers, there could be a high "white lie" error in that answer.
On the other hand, cellphone has the largest penetration with 97,3%.
You can find the charts below. Click on them for the larger versions of the pictures: