The only purpose of a dedicated twitter app is to read messages on-the-go. To post, one just needs to link one's twitter account with the mobile phone number. After that, just by texting twitter, the user can post. In terms of reading tweets on the go, I personally find this useless since most tweets contain links that I'm not going to want link to and read from a small screen.

Has anyone used this app? Anyone have a review?

After rejecting the Twitter iPhone app recently, Apple has finally come to terms and approved a Twitter iPhone app even though it sometimes shows naughty words.
The application developer, Loren Brichter, said in an e-mail earlier Tuesday, that Apple quoted this part of the company's guidelines as a reason for the decision:

"Applications must not contain any obscene, pornographic, offensive, or defamatory content or materials of any kind (text, graphics, images, photographs, etc.), or other content or materials that in Apple's reasonable judgement may be found objectionable by iPhone or iPod Touch users."

Tweetie 1.3 itself offers this list of features below.

* Post pictures with Mobypicture and yfrog (in addition to TwitPic)
* New "Link" button to add to Instapaper faster, and repost individual links
* View full-size profile images
* Dark theme
* Ping.fm integration
* Tweetshrink integration
* Twitlonger integration
* German localization
* Russian localization
* Allow DMs up to 255 characters
* Many UI tweaks
* Play back Song.ly links
* Option to use "RT" syntax
* Better feedback for posting a Map link
* Improved international date formatting
* Detect invalid profile images
* Fixed account sorting
* Fixed profile image URL decoding
* Fixed links with # anchors
* Fixed "(null)" problem when using bookmarklet
* Fixed problem with @ character in password field

via: Apple approved Tweetie 1.3 despite naughty words | iPhone Buzz