What's the advantage of a twitter app on my computer rather than just doing it through the twitter site?

[I forgot my name]

I'm new to twitter and am a little confused, People seem to be using apps rather than simply the site like they do for Facebook.
Thanks

[raza rahil hussain]

Twitter app provide large no of facilities which twitter homepage fails like see the tweet, mentions and DM at the same time, future scheduling, auto url shortening, and many more....
If you're looking for best twitter desktop client then go for "TweetDeck", Digsby etc