If so, perhaps you shouldn't be so hasty in writing these facilities off as you never know when they could come in handy, especially in light of the global financial crisis (GFC).
One of the unfortunate effects of the GFC is unemployment and apparently Twitter is the latest way to effectively get in front of people who know hiring managers or can introduce you to them if you're out of a job.
Like Facebook, lots of people use Twitter to share mindless ramblings, like, "Having a hamburger with friends this afternoon." But the cleverest Twitterers use it to comment on happenings in their professions.
And some are even more proactive than that.
John Johansen, for example, found businesses he'd want to work for and searched Twitter to locate their employees. Through that he found the human resources manager for Bulldog Solutions, a marketing agency in Austin. They met, she asked for his resume - and he was hired.