A newer version of Dropbox is available.Or, Learn More About Dropbox
Full user review
"Get an Extra 890MB"
Sync folders, Free, Reliable, Earn free storage
none that I can think of
you can use this link http://*****/i2krOpj to get an extra 250mb and you can earn more by going to www.dropbox.com/free and complete the tour at www.dropbox.com/gs to earn 250mb, dropbox also did a dropquest in 2011 where you can earn more by doing the quests so keep a lookout for that too to earn additional storage.
You can also earn 8Gb from referals or if your a student you can goto www.dropbox.com/edu and register your edu email to max out your referrals to 16gb