Even though Nokia is the worldwide leader in the mobile market, there has not been a single non-Java Twitter client available while the iPhone has several of them. That all changed dramatically today when Gravity was released. I loaded up Gravity on my new Nokia 5800 XM NAM device during my morning train commute and find it to even be better than any Twitter client I have tried on the iPhone. If you use Twitter and have a S60 device, this software is a must have application. There is a free 10-day trial with the full version coming in at $9.95.
Kinetic scrolling is supported on the 5800 and upcoming Nokia N97 so the experience is quite enjoyable. I actually find Gravity to be one of the most pleasant applications to use on my 5800.