Is there any way to annotate Google Analytics?

I would love to be able to add notes to my Google Analytics graphs, indicating reasons for traffic spikes, when ad campaigns started, when trolls attacked, etc. I found something called the Analytics Reporting Suite but it doesn't seem to have ever been available. Failing that, how would you keep records of this sort of thing?

 

I'd love to be able to do this as well, as it would make it easier to note some of the reasons for drastic changes. But I don't think this is a feature, unfortunately.

 

I'm still hoping there's some third-party tool for this.

 

That would be great..as it stands now I just make notes in a word do with a screen cap of the graphs.