I have no hands-on experience with this phone so I can't definitely say. But on other such low-end Samsung phones, they have only a bunch of shortcuts to sites like Facebook & Twitter which opens the site in the browser. So I won't expect any realtime Facebook & Twitter clients to be present on this phone. Since this is a Java-based phone, you won't be able to install any such apps either.
So if you want a desktop like experience with dedicated apps. for SNS & realtime updating via widgets, consider getting an Android phone.