> I just hope people will actually evaluate the costs of using namespaces
> before automatically sticking them on everything.

You can't go far wrong if:

- You pick a namespace that will never change: don't use dates, or
words like 'proposed' or 'beta', or embed version information
- You always use a prefix
- You tell the team to always use an XML parser to read the XML, and
an XML writer to serialise the XML, and never ever process XML as a
string