五个最优秀的在线文件共享服务（网络硬盘）[z]
From:http://lifehacker.com/388284/best-online-file-sharing-services
Whether you're trying to share megabytes worth of music with a friend or send an important document to a coworker, nothing outshines a fast, easy-to-use file-sharing service. On Tuesday we asked you to share your favorite file-sharing service, and over 200 nominations later, we've rounded up the five most popular services. Hit the jump for a look at the top five, and then cast your vote for the ultimate file-sharing service.
Box.net
Popular for its simple interface and large feature set, file-sharing site Box.net provides 1GB of free space. Users love it for its collaboration tools and open format, which enables fun features like mounting you web space on your desktop and web service support, and RSS feeds. Like many others in this Hive Five, Box.net provides direct links to files so users aren't held up at a landing page to get their download. Box.net's biggest drawback is its free account's filesize limit, which sits at a rather paltry 10MB.
Drop.io
Renown by users for its simplicity and impressive interface, Drop.io (original post) doesn't require registration for use and specializes in document sharing, offering built-in previews of everything from images to PDFs. The innovative service has recently added a couple of new features, like free sending and receiving of faxes and voice recording. The free account has a 100MB storage limit, so unless you're ready to spend some cash, Drop.io is best-suited for smaller files.
MediaFire
Users love unlimited storage, and MediaFire (original post) offers just that. The service is free, offers unlimited disk space, and requires no sign-up to use any of the site's features. The files you upload, however, can only be up to 100MB in size.
Windows Live SkyDrive
With an impressive 5GB of free storage space, Windows Live SkyDrive (original post) is one new product out of Redmond that's quickly found a place in users' hearts. SkyDrive works on a folder-based system, emphasizing the ability to organize your files in personal, shared, and public folders. SkyDrive requires a Windows Live account to get started, individual uploads are limited to 50MB.
FolderShare
The cross-platform FolderShare (original post) is more of a file syncing tool than it is a traditional file-sharing service. (In fact, it's what we used to sync Firefox extensions across the internet.) FolderShare lovers emphasize the ease with which they can share a folder on their desktop, then quickly sync the folder's contents to a friend's computer. All you have to do is set it up, then any file you drag into a shared folder is automatically replicated on computers you're sharing folders with.
Now that you've seen what the best have to offer, it's time to cast your vote for the ultimate file sharing service.