Postgres Gets JSON Type in 9.2

Pretty exciting news that Postgres will be getting a JSON type in 9.2. I have to admit I rarely stray from the standard numeric, string, and timestamps, but this could be very useful. I could see this being used similiar to how some setups serialize php sessions for database storage. JSON could provide a more independent approach than the php serialize and saving to a standard text field, thus share sessions between languages easier..