Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Flickr - image and video hosting website
Mega - Secure File Storage and collaboration
Photobucket - Photobucket offers image hosting and free photo and video sharing.
4Shared - 4shared is a perfect place to store your pictures, documents, videos and files, so you can share them with friends, family, and the world. Claim your free 15GB now!