It is the women and the people between 35 and 54 years of age who are most active on mobile social networking, as found in a study by The Nielsen Company. The December 2009 study found that women are responsible for 55% of mobile social networking activities, whereas, men just comprised 45% of the pie. See image for complete data.
The gender difference in the use of mobile for social networking was quite apparent, but when the data was rearranged to get age-wise usage of mobile social networking, it was found that people men and women in the age brackets 25 to 34 and 35 to 54 were more active than youth in early 20s, teenagers, or tweenagers. This was against what common sense suggests us. 36% people in 35 to 54 age bracket engage in mobile social networking, whereas, 34% of people between age 25 and 34 use their mobile for social networking, but only 16% people between 18-24 use their mobile for social networking. See image for complete data.