Agree with spidey07 about keeping the hardline. Besides they are dirt cheap (with doing your long distance on the cell or Skype)-about $20-25 per month for home use (business lines cost an arm and a leg, but for legal reasons no attorney will rely upon cell or wireless phones, due to warrantless wiretapping concerns).
A little while back I counted up the number of phone lines I am paying for each month-it's eight. Ouch.
And I ALWAYS lie to pollsters, as outrageously as is conceivably believeable.