I'm new here so I'd like to say hello I'm from Poland so my English may not be very good.
What do you think if there were for example free email account when you bought something in the shop, e.g. for each bottle of vodka [don't tell polish jokes] you'd get a free email account or a 1/2/3 months of using it? Do you think it's a good idea? Have there even been something like that it West Europe or USA?