paper click

adcenter

adwords

pay per click

a number from 1-5, with 1 being best, and 5 being worst

a number from 1-10, with 10 being best, and 1 being worst

a rank of either low, med or high

a thumbs up icon (good) or a thumbs down icon (bad)

the price the advertiser bids

the quality score of the ad

the price the advertiser bids and the quality score of the ad

the quality score of the ad, plus a randomization factor

choose keywords relevant to your services

write good ads

create good landing pages

all of the above