I have just installed 2TwitMe, a full featured Twitter client for Palm OS 5 and above. Except for the registration problem that I encountered, 2TwitMe works perfectly with my Palm Treo 680. I just hope that they reply soon to the support ticket that I've just sent.
2TwitMe is now on sale at Palm Infocenter for only US$3.95. If you want this twitter client for your Palm Smartphone, you have until December 15 to avail of the promo.
Here's a comprehensive review about 2TwitMe. Tweeting using my Palm Treo 680 is now made easy! No need to open a browser to access the Twitter mobile version.
To buy your 2TwitMe license, click here.