Microblogging site Twitter is in talks

to buy Tweetdeck, the add-on application that allows heavy users

of the site to track multiple conversations, for about USD 50 million,

says a media report.

"Twitter is in advanced talks to purchase a programme used by

many Twitter users to view and manage tweets, Tweetdeck, for around

USD 50 million," The Wall Street Journal reported citing people familiar

with the matter.

Twitter allows users to post messages of up to 140 characters

in length, and those messages can be viewed by other users.

TweetDeck is an add-on application that allows users of the

microblogging site to track multiple conversations. It also allows

users to arrange themes in different columns, rather than having

to search for them on Twitter's site.

According to the publication, a spokesperson for Twitter declined

to comment, while TweetDeck Inc cChief Executive Iain Dodsworth could

not be reached for comments.