There's an overabundance of cloud services designed for straight-up data storage. From SkyDrive to Box to Amazon Cloud Drive to Google Drive, you'll never want for a place to park important documents and data files. But not every service lets you share photos with ease.
And sharing, of course, is most of the fun of taking pictures to begin with. Facebook, for example, helps you easily tag friends and locations in your images and notifies your friends when they're tagged. The site's interface doesn't allow for the kind of efficient photo browsing of other services, though.
Dropbox does help you create a link that you can share with your friends. However, that process requires additional work on your part. SkyDrive is one site that automatically plunks uploaded images into a sharable gallery. Google Drive works with the company's Picasa software, and as such, there is no shortage of photo-sharing capabilities.
In summary, most cloud services do offer ways to share images, but you may need to try a two or three before you find a sharing style that works best for you. The best way to find your preferred sharing style? Upload just a few photos to each company and use its service for a few days to see if the interface is friendly, fun and easy to use.