yeah, ive used my 860 as a web server at exhibitions. We take along a bunch of laptops and my wifi router and i put our php based website onto the zaurus, and the rest of the laptops can access it using their wifi cards. This gives us an instant intranet in the conference building, allowing activists and participants to join easily from either one of our workstations or from their own wifi device (some of our activists have bought 5x00s since they have seen the capabilities of the zaurus).
It gives us the opportunity to show people how our community website works and to access all of its functions without the need to install a DSL line in the venues we do our multimedia exhibitions in. Before i got the 860 we used to have to take the desktop box along every time, once we can get some cheap simpad\'s we hopefully wont need the laptops anymore either!!
We use old/recycled/donated hardware as we are a non-profit human rights group - so the tech budget is tight, most of the newer computers we recieve get recycled and sent back out to conflict zones and areas with little computer coverage. So the zaurus is one of the more powerful computers on our wireless network :-)