Is there a minimum spending requirement, contract length or any other spending obligation?
There is no minimum monthly spending obligation or contract required when you advertise with Yahoo! Search Marketing. You determine how much you spend each month by setting a bid and daily spending limit and you can turn off your advertising and stop your spending at any time. To activate your ad, you’ll need to deposit funds into your account, which will be used to pay for your initial click charges. The amount of the deposit is up to you and can be as little as $30.