The passport in post 38 of this thread appears to have at least 4 extra page insert booklets.

http://www.flyertalk.com/forum/china...-stamps-3.html

Lots of people on FT get their US passports up to 96 pages (48 pages plus two 24 page inserts) within 2 or 3 years.

The $150k/year leisure travel budget is certainly out of my league, but fails to impress me (a single intercontinental business jet charter would wipe that out in a heartbeat).

There are lots of 16 year old kids here in Shenzhen that run out of pages quickly; going back and 4th to HK twice a week for an extended period of time results in a lot of PRC stamps.