Here you can safely store your screenshots, images and generate a link to share on forums, websites or create an album to share with friends.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
PostImage.org - Provides free image upload and hosting integration for forums.
imgbox - Imgbox is a free image hosting service.
ImgBB - Upload and share your images.
ImgPile - Free unlimited cloud image hosting.
ImageShack - Unlimited space to host images, easy to use image uploader, albums, photo hosting, sharing, dynamic image resizing on web and mobile.