Apologies if someone else has already reported this - Vodafone caught me out, hence post
I already have a T-Mobi 3G dongle (monthly payment), but saw that Voda were offering PAYG dongles with no time-expiry on the £15 data purchase. This meant that it would make a good backup device, should my T-Mobi die or not work in a particular location.
It turns out that Vodafone have now unilaterally pulled the no time-expiry deal, so if you don't use the data within 30 days, it expires...
It would be nice to think that the widely advertised policy was not a temporary ploy to attract 3G users - though this Register article does make one pause for thought...
http://www.theregister.co.uk/2010/02...ing_statement/
HTH