Getting free space which would allow you to store a large amount of data over the internet and you are allowed to retrieve it from any part of the world. To get the free storage in the dropbox there are few steps and by doing that simple and easy steps you can get up to 16GB or more than it for free from the drop box.
Inviting friends: sending referrals to the friends to join dropbox through Gmail account can make you get 500MB for free.
Social networking sites: by connecting you account (face book, twitter) you can get a free space of 125MB + 125MB = 250 MB for free.
Mailbox App: Download Mailbox App and when you enter (link dropbox as well) in it for first time than add your Gmail or email account and credentials and doing this you can get a bonus of 1GB of free storage online.
Getting Started: A very beginning step by which you can get a bonus of 250MB of free space what you need to do, you just need to complete the introductory steps and this will lead you to get a straight away 250MB of free space.
Dropbox feedback: This is just to know where they are standing and what kind of services they are providing. Just fill up a feedback and get 125MB of space for free