Big positives for me are:
- This also means you can customise how the ads are displayed so they don't look out of place or bloat your pages. I was surprised they let you do this. My contact there pretty much told me I can make them look however I want (e.g. size, colours, fonts).
I'm using Carbon Ads on this page for example (see just above the first subheading, make sure you have adblock disabled):