Pros
Global, market leading-company with an excellent reputation and products to be proud of. Forward-looking at the senior management level and in the more forward-looking areas of the company. In the right role, this has the potential to be a great company to be in at this time as the business evolves online.
Cons
No career progression - at all - in the more 'traditional' publishing business areas and consequently a stagnant culture and low-calibre middle management with predominantly 'admin' backgrounds. Senior colleagues in traditional editorial roles are entrenched in their positions and generally hostile to change. More interesting, forward-looking roles (particularly those that balance business/technology development), and more senior executive or skilled roles generally - tend to be recruited from outside as the company does not develop these skills from within. This could be an opportunity if you already have a strong background in those areas, but equally you could find yourself frustrated. It would be worth asking some probing questions about the specific department if interviewing for a position within the company.