Pui Wing Tam's only MO is writing poorly conceived hit pieces on Valley companies and personalities.
Here she is literally going through Salesforce CEO Marc Benioff's garbage: http://blog.sfgate.com/techchron/2006/11/17/valleywag-takes-...
Here she is beating up on every CEO who's not Zuckerberg or Chad Hurley (title tag: "Struggling CEOs"): http://online.wsj.com/article/SB119741476977621971.html
And here she is saying "Venture Capitalists head for the door" -- in 2009, no less!: http://online.wsj.com/article/SB124416376153487535.html
The woman is just a hack who writes the same article over and over again.