Today's SearchDay, Google Ad Policies To Be Expanded Publicly, is an article by me looking at how Google is finally going to explain what ads it will -- and will not -- accept.
Google has come under a ton of criticism from many different quarters for its lack of transparency about this. People selling particular products, such as guns, might not find out these aren't allowed for sale via Google ads only after they've created accounts, selected keywords and submitted ad copy.
Arguably more controversial has been Google's internal "anti-anti" policy, where ads that were anti-anything might get rejected. That policy has now changed, and it supposed to be better explained to the public in the coming weeks.