We have two separate clients that spend big $$$ on AdSense driving new customer acquisition that used single fb connect for login.
After the API issue last week both saw their 8+ LP scores dive down to 1! Lost commerce for both over the past few days equals multiple tens of thousands, still not seeing the scores recover.
To add to that to people who don't know your quality score for a page in adwords is somewhere between 1 and 10, so someone with a page rank of 10 gets ads cheaper than those with a lower quality score. A score of 1 is basically googles way to signal to a site for whatever reason that they don't like what you are doing. Usually unless you can get the original decision overturned the domain will forever sit at 1 and be basically useless in terms of using adwords.
I hate to be pedantic (publicly, at least), but I believe you meant to say that your clients spend big on AdWords, not AdSense, or have the two become somewhat interchangeable (honest question)?
After the API issue last week both saw their 8+ LP scores dive down to 1! Lost commerce for both over the past few days equals multiple tens of thousands, still not seeing the scores recover.