Twitter allows you to interact anyone in the world (that is on Twitter, of course).

I'm going to NYC for the first time this week. I want to eat at places where the locals eat, not what's trendy on the Web or TV. How did I get recommendations?

Twitter.

I reached out to NY food bloggers and they happily responded with tips.

I don't need to get introduced by someone else. I don't need to personally know them or "friend them". I don't need to pay for 3rd party services to hunt down a phone number or an email address.

People often miss on what I think is one of the most fantastic features of Twitter.