Aside from the basics -- relationship status (whether listed or unlisted, have a look at the photo albums -- you'll know), age, school and other categories such as employment, by reading between the lines you will discover a wealth of information about poor Joe's hapless existence: his income, the details of his social life, if he got fat(ter), if his Grandma/dog/dealer died, what he's eating, the movies he likes, the movies he doesn't like, if he got dumb(er), if he's getting any, if he's a drunkard, if he drives a Camaro, if he voted for Obama (he didn't), if he watches Glenn Beck (he does), etc. etc. etc. It is likely that you will be able to determine, in a very real sense, the nature of Joe's current existence, warts and all.