Well the last few years have been interesting having left Oak Furniture Land to go and work for the Cotswold Company we have seen quite a few changes to the PPC landscape.
The biggest has been the rise of shopping campaigns and really how bad they are. That needs explaining..... they are great for Google bad for companies.
Criteo recently moved into this market and even more recently went into a head to head with our 'in house' system.
A battle if you like, Criteo are losing.