On it's most basic level dropbox is just a folder that constantly backs itself up to your online account. Spotty internet connection? Don't worry your files are available offline too and they'll back up again when you get back online. An account with 2gb of storage is completely free, to upgrade to 50gb is only 9.99 and double that for 100gb. They also have team pricing for groups.
"Your files, anywhere
Any file you save to Dropbox also instantly saves to your computers, phones, and the Dropbox website.
- 2GB of Dropbox for free, with subscriptions up to 100GB available.
- Your files are always available from the secure Dropbox website.
- Dropbox works with Windows, Mac, Linux, iPad, iPhone, Android and BlackBerry.
- Works even when offline. You always have your files, whether or not you have a connection.
- Dropbox transfers just the parts of a file that change (not the whole thing).
- Manually set bandwidth limits -- Dropbox won't hog your connection." - Dropbox
This is for all those things you need to remember, groceries, to do lists, you can eve share notes and collaborate with others. Even better you can take pictures of text, even handwriting and Evernote makes it searchable. It's the ultimate notebook to keep track of your work, projects, inspiration, family, and everything else in your life.
"Chances are, if you can see it or think of it, Evernote can help you remember it. Type a text note. Clip a web page. Snap a photo. Grab a screenshot. Evernote will keep it all safe." -Evernote
If you haven't looked into Amazon's Instant Video or Cloud Player you need to. Imagine having your entire movie and music collection with you everywhere you go, yea that's what it is. I'll never buy a dvd, bluray, or cd again, and they'll never get scratched, borrowed, lost, or thrown in a landfill. You also get tons of free videos just for having a prime account (about $79 a year). You can set music you buy through amazon mp3 to go straight to your cloud drive the first 5gb is free and then it's a dollar per gb each year.
Pinterest -The ultimate bookmarking system, tag things, "pin" them to different "boards" to organize, share with your friends and follow people. It neatly files all your pins with pictures and descriptions so looking for something is a breeze. Wandering around pinterest can be an inspiration overload for the creative types, there's so many awesome links in one place. You must have an invitation to join, but you can request one at their homepage
"Pinterest is a virtual pinboard. Pinterest allows you to organize and share all the beautiful things you find on the web. You can browse pinboards created by other people to discover new things and get inspiration from people who share your interests. People use pinboards to plan their weddings, decorate their homes, and share their favorite recipes." -Pinterest
Picasa Web Albums- Fully integrates with your Google + account and Android phone. You can even set it up to auto upload all pics and videos on your phone to a private album. Privacy settings are crystal clear, you only share what you want with who you want. Picasa is also a free photo editing software that's very intuitive, or you can edit online with their built in piknic photo editor. Buying additional storage beyond the free 1gb is simple and cheap $5 a year for 20gb.
"Looking for a simple way to get photos from your camera and computer on the web? Picasa Web Albums provides 1 GB of free storage that makes sharing your photos quick and easy. To start using Picasa Web Albums, just sign in with your Google Account at http://picasaweb.google.com. (If you use Gmail, you already have an account.)" -Picasa Web Albums