Self censorship or just common sense?

In today's Nature there's another installment of Prospect by Paul Smaglik (yes, it's not open access -- unclean! unclean!). If you don't read it, Prospect is a column geared towards postdocs and other beginning researchers and aims to give them career advice, often verging on the banally obvious. Today's was a little different -- it's entitled "Could blogs replace résumés?" and suggests that "perhaps it's best to treat your blog as a public document that you wouldn't mind your next boss reading". Well, I suppose -- realizing that what you say on the Internet can come back to haunt you is not new and dates back to the early days of Usenet newsgroups, but at the same time it isn't possible to say anything interesting without potentially pissing off somebody.