There was a great article on AdAge yesterday – Learning Twitter? Don’t Take Your Cues From These Agencies. The crux of the article was about how ad agencies are still testing the waters or plain clueless about using Twitter. As Rupal Parekh, the author says: The irony is that the same people clients hire to erect communications and social-media strategies often appear uncomfortable using Twitter themselves. There are some stunning examples out there: Computer maker…