I have a Treo 270. Palm OS, phone, web browswing, text msssaging. Can do email, but I don't use it for this.
The Treo 600 also has a camera.
To browse the internet, you turn on the phone, then bring up the browser, which establishes a GPRS connection. Then you can browse the web. However, sites with frames are a pain. Sites designed for mobiles are much nicer to use.
I find it handy for reading news in the morning.
"There is a difference between responsible criticism that aims for success and defeatism that refuses to acknowledge anything but failure. Hindsight alone is not wisdom and second-guessing is not a strategy"- George W. Bush