Discover has launched a new benefit for Discover checking customers called Balance+. Balance+ lets account holders overdraw their account by up to $200 on debit card purchases with no fees. You must qualify for Balance+ an that requires your account to be in good standing with a balance greater than $0 and you must have received at least one qualifying direct deposit of $200 per month for the last two calendar months.
Not a huge benefit, but might be useful to some account holders.