Depends on which section you read. I introduced my fiancee to /r/IAmA and she thinks reddit is mostly about child molesting drug-dealers who fly fighter-jets and rescue endangered species, because they were raised in a polygamist cult family living in the Everest base camp.
To me it's mostly proggit, hastily scanned once every 1-2 days.
I love reddit dearly, but there are some days when you could run it through.
and get something that was recognizably slashdot circa 2002.