Last week we reported on Wednesday that AdWords went down not allowing advertisers to login and change their campaigns. The issue was reportedly resolved shortly after but for some reason, still people are having issues logging in.
A Search Engine Watch Forums thread still accounts for issues, even after AdWordsAdvisor suggest there should be no more issue.
There are also weekend reports at WebmasterWorld with the same issue.
I hope they get is resolved shortly.
Forum discussion at Search Engine Watch Forums & WebmasterWorld.
