Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
EyeEm - Open your eyes! Discover places & things you love, with every photo you take.
Flickr - image and video hosting website
Photobucket - Photobucket offers image hosting and free photo and video sharing.
Travelisty - Product Hunt for travel stories
imgbox - Imgbox is a free image hosting service.