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Definitely the wrong place to be trying to talk to the api guys. email api@seomoz.org However it sounds like you are querying too quickly. As it turns out I was having a chat this week with a friend who was having a similar problem. You can only make 1 call per 10 secs (you can halve that time if you are a pro member and email them and ask). If you make a call every 8 seconds, you get 8 values back instead of 10 etc. so make sure you are giving enough time Stephen