filling a db on CD, what happens?

[viktoras didziulis]

what about storing data to an external database on a remote server ?.. 
Or is the data too user specific or privacy sensitive (or how is it 
called correctly in English?..) and there is no point to save it at all? 
What about using usb flashdrive instead of CD ? Or simply putting the 
application online to be downloaded and installed locally or maybe load 
and run directly from the web server, if it is small enough ?

Viktoras