The idea: Target masses for 1 cent per clickWe will set up a Google AdWords campaign and target users globally. We have to pay for each click, but as only few people do this, this currently costs around 1 cent per click. This is the magic, like 20% convert into an actual DropBox account and we get the extra Gigabytes.
-Copy your referral link from here. Whenever someone uses this link to sign up you are awarded 250 MB of extra space (up to 8GB in total).
-Make the AdWords campaign.
-Follow the steps in the video.
Let me know how this works for you!