Generally I'd like to find some people (geeks) that share these technical
ideas: (1) store things in a file system, (2) use XML, (3) do not aim too high
(do not try designing a general system for handling all caving-related data
for the whole world).

If I could find some people that agree with this, then we could try to reach a
compromise on:
(1) how do we store our data in a file system,
(2) how do we use this XML (let's do a common spec, but keep it simple)
(3) how do we aim not to high and not end up dead like CaveXML :)

After we do that, everyone goes away to do their own projects and write their
own code. Or maybe we have some degree of co-operation in actually writing the
code. Normal life. But the idea is that all geeks working on "cave inventory"
and systems making extensive use of cave inventories try to adhere to this
framework as much as possible. So that we can then exchange our tools.

I think things like "which revision system do we use" or "do we use web or                              
Python" are really secondary. Everyone has their own views, habits,
backgrounds.

My idea is to work on this in a small group (no more than a few persons) - to
get things going fast, even if they are not perfect from the beginning. If it
works, we try to convince others to use it and maybe push it through UIS.