Sales conditions: see website.

Typically legal sales conditions are printed on offers and invoices (what happens if the invoice is payed to late, which courts are competent in case of disputes...).
A judgment by the commercial court of Oudenaarde (december 26th, 2011) has decided that a reference to the conditions on the website is sufficient to be legally valid in Belgium.
I wonder if the judge that issued this ruling is sufficiently acquainted with IT.
After all the supplier can change the conditions on the websiteany time, without notification and without leaving a dependable historical change track.
There is no independant party that can verify today what the conditions on the website were at the time the reference was communicated.