If you don’t have dropbox yet, please click on my referral link to register.
This will add 0.5 Gb to my account until I reach 16Gb limit. And you will also receive 0.5 to your brand you account. You can expand it by sending your own referral link to your friends. After you register, you have to install the dropbox software and login using it to get the bonus space. If you don’t want to install anything, there is an easy hack to make Dropbox portable.