Business journalist Sarah Lacy’s interview with Facebook founder Mark Zuckerberg at the SXSW conference is being torn to shreds by bloggers, because of Lacy’s anecdotal style and rambling questions.

Lacy’s response: an angry message to Twitter (flagged up by CNET) shown below.

Lacy’s interview is now being touted as teaching material for journalism professor Jeff Jarvis’ classes. On his blog, Jarvis says Lacy’s biggest mistakes were not knowing or listening to her audience and her treatment of Zuckerberg – who apparently had to interrupt her ramble to suggest she asked a question at one point.

A post on Adam Tinworth’s blog details the lessons that should be learnt from this interview, namely: ‘engage, know your occasion, do your research and don’t confuse yourself with the story’.

Well said – these are basic interview skills, but Tinworth’s post highlights how these rules should be applied in a new media environment. He points out that despite working in a social media area, Lacy has ‘no direct means of replying that isn’t mediated by others’.

Lacy’s credentials as a business reporter covering technology for BusinessWeek and author on the subject of Silicon Valley and Web 2.0 should have stood her in good stead for this interview.

But it seems her reputation was not sufficient to endear her to or engage with her audience or the blogosphere – after all the interview wasn’t supposed to be about her…

UPDATE – Lacy gives her reaction to the interview in a video response (from Omar Galagga)

[youtube:http://www.youtube.com/watch?v=-wyrny8PP-M]