It's the best way to communicate because everyone has the pop-ups coming up on their phone screens. Form groups so you can quickly communicate ideas to your team. Or you can tell them that lunch today involves 'biriyani'. Messages are focused, instant and no one can later complain that they missed it. You can't miss a message on your phone because statistically people check their phones about 85 times a day.
The short, quick chirps of 140 characters known as Tweets are slowly catching on in Bangladesh. Facebook posts are personalised accounts that elicit an emotional connect from your friends. Usually it's a thumbs up. Twitter on the other hand, provides quick bursts of info delivered from your virtual soap box. You stand on it, you say your thing and you're acknowledged. You can be frequent without annoying people as long as your info is relevant to those receiving it.
How Twitter can help is by broadcasting your message quickly to a large group of people. It's also a great way to communicate your work experiences to your customers. But only when your customers are on Twitter. Great for artists and media specialists.
Facebook is a dinner party at home for close friends and some random plus 1s. Linkedin is the professional Facebook. It's like an office meeting where you cannot show everyone your new pimple that is shaped like Jim Morrison's pimple. Actually, you shouldn't do that on Facebook either.
You can create private groups in LinkedIn to share and discuss specific work-related topics. You can leverage it for better inter- and intra-office communication. And most importantly, you can recruit better. Or be recruited.
If you're the boss or team leader, encourage the proper usage of social media for the workplace. It can do wonders for promotion and branding.
I left out Google+ because that is still the party that no one is goes to.