I find the fact that in the school where I teach, students' interest in reading is very low. I wanted to do research about the use of social media (particularly Twitter) to start increasing their reading interest
Are You an Indonesian? If that's right maybe You can looking for the paper that You search at the Online Catalog in the University that has a Library and Information Science Program, such as: UIN Sunan Kalijaga; UGM; UI; UNPAD and etc by Type the Keyword "Minat Baca". There, You can find many Thesis related reading interests. Hope that helps.
I work with primary school students and not with high school students. We used chat application for communicating and playing games. If you consider this kind of environment as social media then yes, there interest in writing has increased. But I can not say it with complete confidence as i have not analysed my data with this angle. Though I have observed increase in their interest in writing.
This recent conference paper provides an example for helping students to write and speak more using their national English language for their classroom and exam papers as opposed to their preferred native Creole: