TweeGo is under heavy development and a new Version: 0.2.1 is released today.

TweeGo is a twitter client developed for Maemo 5 using Qt/C++. Combining great usability and excellent graphics, we managed to achieve an amazing user experience. Source Code: http://gitorious.org/tweego

here is the changelog:

• + Added possibility to tweet with location
• + Added possibility to view tweet location on a map
• + Added avatar upload by clicking on avatar
• + Added possibility to cancel the login
• + New logo
• + New re-tweet button
• + Fixed loader transparency on timeline
• + Remember me fixed
• + Fixed unfollow
• + Fixed favorite
• + Fixed delete tweet
• + Username is no longer erased when wrong username/password happens
• + Fixed URL button alignment

seems like they are going to the right direction.

source: tweego

UPDATE:

TweeGo has landed in Extras-Devel repository :-)

for those, who can't install TweeGo for the first time:

How to install TweeGo

1. download "qt-mobility-examples" in app manager
   (you need some Qt4 librairies, that are not included in package yet)
  

2. Download the latest version of tweego

3. Installation

start a X Terminal
sudo gainroot
if you saved it in Documents do:
cd MyDocs/.documents

dpkg -i tweego-0.2.1.deb

Then update via App manager to 0.2.1-1

How to uninstall Twitterbox

start a X Terminal
sudo gainroot
apt-get remove tweego