Hi Catherine - I just came across your post from 2010 and feel compelled to reply, even if I'm only talking to myself. 
One AR global program manager (no agency) to 5 PR agencies (US, UK, FR, DE, LATAM) with 4 in-house PR staff.
- Company revenue in 2013 $332.5 mil
- Five major solutions
- Four major verticals
- Three major geos
- Recent acquisitions: one in 2012, one in 2014; potential for another in 2015
- MQs - 2+
- Waves - 2+
- Other report RFIs - I lost count
Thanks for listening,
Marie