Since the advent infinite scrolling, one of the most common problems in development is loading a large number of images without crashing the browser. Combine it with the grid display a la Pinterest or Masonry and you get a nice and interesting problem that I believe any web developer should
Having an up to date backup of your blog is very important if you don't want to end up crying for your data in case something goes horribly, horribly wrong. Importing and exporting a Ghost blog's settings and data is as easy as pressing a button but the truly hard
Some of my colleagues from a non-developer department were in need for some help. They had to translate the product info from some images and it was very time consuming. If only there were a method to automatically extract the text from the images, to give them a head start.