If you get a Google+ account, one added benefit is that you can now upload an unlimited number of higher quality photos (up to 2048 x 2048 pixels) to Google+ and/or Picasa Web Albums, for free. There are some differences in how your photos are handled and stored, depending on if you upload photos in Google+ or in Picasa Web Albums. The details are explained here.
share
Dropbox Free: Get Over 2 GB Free Extra Storage Space
Participate in Dropquest 2011 and get up to 1 GB of free extra storage space for your Dropbox account. Complete other tasks within your Dropbox account on Dropbox’s website to get even more free extra space, adding over 1 GB more to your Dropbox account, for a total of over 2 GB of free bonus Dropbox storage space.
Dropbox vs Mozy vs SugarSync: File Sync and Backup Comparison
Three of the most widely used file sync, backup, and share services are compared here side-by-side: Dropbox, Mozy, and SugarSync. Depending on how much and how often you plan to sync, backup, or share files, one of these services may be more suited to your needs. Specifically, the free features, the paid features, the pricing, and the overall value are compared. All three services offer both free and paid packages. First, a brief overview of SugarSync, Mozy, and Dropbox, followed by a side-by-side comparison of all three services.