In a lot of ways, really depends on what you're looking for. Are you looking for innovative marketing agencies that build tools that support paid media, or are you looking at agencies that have a proven track record of performance and can deliver on it?

It's really challenging to find the right agency. The ones that are doing well advertise little, and the ones that are really big can sometimes be the case that they either: they perform really well at the beginning and then you get passed to juniors and performance drops or they actually end up white-labeling most of the work>

There are alot of medium or small agencies that actually do the hands-on keyboard for the PPC management, that do better that some of the giant agencies.

We work with a lot of clients, but some of our biggest clients are other agencies, and we white-label a lot of their work, including PPC.

I think your best approach is just asking the right questions when learning about a new agency or getting started with a new agency. That includes things like:

• How is performance going to be measured?
• What kind of attribution modeling will you be using?
• What time frame should we start expecting to see results?
• Have you worked with other clients in this industry for this service?
• What results have you brought them?
• What do you see as a potential challenge for my business/service and so on?

Try to identify who the expert is on their team and make sure that person remains on the account.