the author of this app says:
This is an instant messaging application for SmartPhones. It works with your persistent (GPRS/CDMA 1xRTT) or CSD wireless data connection to give you an always-on presence on the Yahoo!, MSN and AOL chat networks. You don't have to be in the VeriChat application to chat with your buddies; they always see you as online and can send you messages, and you can receive and reply to them. You can be logged onto Yahoo!, Microsoft Messenger and AOL Instant Messenger at the same time.
This program also works with your Palm™ device if it has an Internet connection and a paging address. The program is specially customized for the Treo's keyboard and Jog dial. You can avoid using the stylus altogether if you wish. The program has a small memory footprint that takes less than 81KB of RAM.
This program works with all PalmOS®-based SmartPhones, including the Treo 180, Treo 270, Treo 300, Samsung I330, Kyocera 7135, and VisorPhone.