Since Facebook's popularity has grown, there's an amazing variety of people who could be at the other end of that latest friend request. It could be your old college buddy, your high school crush, your grandma -- or it could be the guy who signs your paycheck.

You may think accepting your boss's friend request will be harmless. You're smart and Facebook-savvy, so you can make sure you can keep your work and personal lives separate even if you accept, right?

Think again. Whether it's a momentary lapse in judgment on your part or an accidental slip from one of your friends, giving your boss access to your personal profile is a minefield no matter how high you crank up those privacy settings.

Clicking the "ignore" button on your boss's friend request may lead to an awkward day at the office, but it easily beats the ongoing danger and embarrassment that goes along with pressing "accept."

Don't agree? Here are five reasons to change your mind ...

shocked businessman looking at laptop computer

No. 5: Getting the third degree over happy hour

One of Facebook's beauties is the simplicity of planning a get-together. Having a party? Set up an event page. Coordinating a weekend trip with a small group? Send a message. Getting together with a few folks for drinks after work? Write on their wall.

The problem is that most of these tools default to public viewing. So if you decide to tell Steve in accounting that a few people from your department are going to happy hour by writing on his wall, your boss will know, too.

If your boss is the suspicious type, expect to be grilled. Who's going? Why are you going out -- to gripe about the office? What's the problem, exactly? And what do you mean both Karen and Sam will be there? She's his supervisor; don't you know that's inappropriate?

Even if your boss isn't into office conspiracies, you could still get a question you may not want to answer: Sounds fun. Can I come?

If you think that's scary, wait till you see our next reason ...

woman using computer mouse

No. 4: Precarious status updates

There's a certain release in griping via Facebook status updates, banging out your frustrations on your keyboard and broadcasting your displeasure to all your friends at once. "I work for idiots! Can you believe the pointlessness of what these yahoos are making me do? They're running this place into the ground!"

Of course, if one of those yahoos is also your Facebook friend, that displeasure will be broadcast a little further than you wanted it to go. Don't be surprised if you suddenly end up with an email suggesting you might be happier in a different position -- like one with another company.

And if the time stamp on that status update shows that not only were you complaining about your employer in a very public forum, but you were also doing it on company time, you may just want to just start cleaning off your desk and save yourself a little time later.

Of course, if you're already looking to move on, need our next tip ...

upset office worker at computer

No. 3: Good luck keeping that job hunt secret