Do you believe in spanking your kids or other methods?

i spanked my baby girl when she would have acted up between the ages of 2-4. and ill tell you what, i have not had a dissaplinarry problem since. its always yes mam no mam please and thank you. of course i also reward good grades and such. i believe the key is having equal amounts of dissapline and love and above all teach your kids respect. i see so many kids today that have none.