[Sashimister]

Originally Posted by lounli

I think Japanese normally use in formal context.

For example: Newspaper
http://www.yomiuri.co.jp/politics/ne...OYT1T00385.htm
the end of article there's "だ".

lol You call that "often"?

And what do you figure the chances of OP reading, let alone writing, Japanese newspaper articles in the near future would be? IMHO, One needs to grasp the approximate Japanese proficiency of the questioner in order to answer the question in such a way that it would be helpful to him/her.