Last night Google informed me that they have made a "minor" update to the landing page quality score factor. I was told that only a small number of AdWords advertisers will notice an increase in their minimum bids.
Google is stressing to me that a "vast majority of advertisers" will not be affected by this change.
So I decided to see what the advertisers had to say. Since this update happened last night, I did not expect all that much conversation a few hours later. But currently I found two threads.
Today I got many of my best keywords in different campaigns go from Great to Poor (with $10 bids!!!!).
So I've had a campaign running for keyword and I happen to have keyword.org as the domain. Ad and landing page are all about keyword. Suddenly overnight all the keywords that were getting double digit CTR's have been reevaluated to "poor" and I've been asked to pony up 20X more per keyword.
All the keywords that were converting for me, went from great to poor overnight.
Same here. Site i've had for 1-2 years on adwords are hit.