Will Talwk be restricted to social media? Latest news/articles/blogs can add a lot of value to the feed, especially if one wants to follow a live event. Also, if user can integrate their facebook/twitter account to Talwk, the site can then highlight and prioritize the stuff shared by people in the user's network.
Also, Just to check the buzz about Talwk, I visited tawlk.com/#!/tawlk and witnessed the oh-so-tragic condition of the enlish language on the interwebs.