And I've come up with an interesting topic. I was reading a newspaper today and wondered "why they use dashes in between the sentences?". Well, I was not concentrating on them all these days --- better late than never --- I tried to use it. Interestingly, they are used many times in New York Times editorials and opinion. So, here I am with the details. Thanks to "Goof-Proof" book, which gave me the necessary knowledge to post you guys on this.

What i have observed while reading some editorials is, there are four instances where we use them.

1) To signify an interruption of thought, or to insert a comment.

Ex : Read this
In that column, he said "a hard question that I don’t purport to have a compelling answer to" which is a comment inserted in between the sentence.

2) To emphasize exposition

Ex: Don’t waste your breath trying to tell a 10-year-old to confine his reverence for Tiger Woods to the realm of golf — to admire Tiger’s swing but not his swinging.

3) To represent omitted letters in a word

Ex: Do censors still block the word s— from use on the radio?

4) To connect a beginning phrase to the rest of a sentence

Ex: Pride of New York—that is the agriculture program in which I
am interested.

Click here for more information and here for some more :)

Please pass your comments and share your knowledge.

Happy dashing :D