Twitter VS Facebook

Twitter is the central of social media, the gust lecturer said.

I'm a experienced facebook user but a noob of twitter. I've had a twitter account for near 2 months already but I've still got no idea how to use this stuff. It's generally like something like facebook, I guess? The only different that I know between these tools is -- twitter can "follow" people without their permission, but you can't be a friend without someone's permission on facebook. Perhaps they have got some more differences, but what I discovered by now is just as simple as that.  I would say twitter threat user's privacy more according to this, that's why I can't understand why do they said twitter is the central of social media, they gave me the same feelings but just from different providers. And, facebook is more popular than twitter, nearly everyone got it, but that's not what's happen in twitter. I thought the more popular the social media, the greater it is? Because it could influence people more and influence more people. So what's the point?

Anyway, I'll try to get used to use the twitter as I could search many Hiu Yan Lau from google, but none of them is me!!! That's not a good phenomenon at all.

Do you have a twitter? Do you know how to use it? Please feel free to left any comments behind.