If Facebook kept its original design it could be argued they wouldn't be where they are now. Most people don't notice how much Facebook changed its UI over the

If Facebook kept its original design it could be argued they wouldn't be where they are now. Most people don't notice how much Facebook changed its UI over the years because the changes have been gradual. If Facebook as a site had not evolved, there is chance that they wouldn't have survived. Reddit has hardly seen any update in its appearances and I believe within 5 years it will be at risk of losing its user base if it does not evolve its front-end to make the slight improvements that are so obviously overdue (looking at you, Reddit Enhancement Suite).