It really all depends for me. Most of the time, I am checking Reddit (specifically, reddit's college football subreddit, /r/cfb), Facebook, or Twitter. While my Twitter usage has definitely dipped in the past year or so, I still keep up with it when I'm looking for news that isn't being reported on at the time. For example: today, my bank was having issues, and I checked Twitter to see if anyone was discussing it. People were, which made me comfortable because A) I wasn't alone, and B) the bank's official Twitter account had replied to several accounts, indicating that they were aware of the problems.
When I'm not on social media, I'm usually logged into my university's portal to see what assignments I have coming up. It is nice being able to finish my degree online since I am a full-time employee with a wife and a child!
Other than that, I really don't have any particular browsing habits. I'm usually hanging around on IRC or some University of Alabama website somewhere. If you're ever on Freenode, hit me up!