Backseat Driver

Hi guys!
Have you ever experienced that someone in your community tried to direct the actions of many people around him or her? In English this kind of person is callled a backseat driver. A backseat driver doesn't always sit in the backseat of a car. They could be in a car (wherever they sit) or in a general community. The most important thing to notice is that whenever they mingle in, they try to give many tidbits of advice to many different people. They don't limit their comments and directions to driver.

So what do you think guys? A Backseat Driver, is this personality positive or negative? For me, in particular case, they are helpful, but they are annoying indeed in many ways. What about you?