This is an interesting movement and look at the perspective of Sri Lankan Tamils. I think its important for many reasons, not just that most Americans are very unfamiliar with this conflict. The fact that social media are useful in producing outcomes for the Tamils, which I interpret you suggesting. Yes, it is important that you look at actual social media posts and somehow record them (do some content analysis?). I'm wondering if you can, when you pitch this project, do so in a way that gives it more of an activist bent from you end. In other words, what you're proposing here is mostly a reporting of how others are using social media to meet activist ends. I'd like to see how you might cast your own project in activist terms. Give it some thought. Activism takes may forms and I believe you can make the case for yourself in this project. Perhaps in presentation?
Give is a try and I look forward to hearing your pitch next week.
Your literature review looks really good; I made a few comments on the review itself, and will scan and email it to you so you can see it. Be sure to put your references in alphabetical order by author last name on the back reference page. Otherwise, very solid.