Dropbox is an online file storage and sharing service that is being widely adopted among all types of PC users and businesses. To answer your question “what is Dropbox?”, this is their description on the dropbox website:
Dropbox is a free service that lets you bring all your photos, docs, and videos anywhere. This means that any file you save to your Dropbox will automatically save to all your computers, phones, and even the Dropbox website.
Dropbox also makes it super easy to share with others, whether you’re a student or professional, parent or grandparent. Even if you