As all of you know users are allowed only 1000 updates in a day(including replies). With more than 145 million people as users there are going to be calls for increasing the status update limit. So instead of increasing the limit ,Twitter can simply allow accounts to send unlimited replies to users who have addressed the tweet to them.
Suppose if I am addressing a tweet to someone say "@Techcrunch I love your blog" and suppose if Techcrunch says "@Ramanean Thank you" and these tweets(Replies by Techcrunch) should not be counted as part of daily 1000 limit for "@Techcrunch" as it's more of a conversation between two users rather than a status updates for followers!!! If the reply limits are increased ,this will open endless possibilities of using Twitter for more important messages!! and more interaction among users and it may also be a good revenue earning opportunity for Twitter!! by exploiting this for growth in a completely different way!!! This would do wonders not only for Twitter but also for others and incase of natural disasters also.! -- Twitter developer documentation and resources: http://dev.twitter.com/doc API updates via Twitter: http://twitter.com/twitterapi Issues/Enhancements Tracker: http://code.google.com/p/twitter-api/issues/list Change your membership to this group: http://groups.google.com/group/twitter-development-talk?hl=en