I've made an experiment: can I survive one month 
       with an amount of 500mb? Can my netlife be happy 
       with so few Mb?
       Surprise: 500mb are not few! I can live well with 
       a netbook (with Debian inside), a cell(modem) and 
       a SDF Meta Arpa account! 
       
       +++++++++++++++++++++++++++++++++++++++++++++++++
       
 (TXT) $vnstat output after almost one mont
 (TXT) $vnstat graph