Katie Couric's Notebook: Blackberry Etiquette

It's bad enough at the dinner table, but how about in the conference room?

A new poll from Yahoo HotJobs found that a third of office workers check their blackberries while their colleagues are talking.

It's become a ubiquitous practice in all kinds of professions. During President Obama's speech to the Joint Sessions of Congress lawmakers were using their pda's to post messages on Twitter.

If the President can't command attention, your company's V-P of sales is up a creek.

The New York Times reports that some offices are banning blackberry use in meetings, and one management firm found that more than 30 percent of bosses say it's never ok to click away when someone is speaking.

You don't want the habit to cost you your job. After all, you'll need the health insurance to treat your blackberry thumb.

That's a page from my notebook.

I'm Katie Couric, CBS News.