One of my favourite sources for entertaining content is Cracked. A site that features humour-based articles, videos, photoshops and more - I visit it daily. The main draw for me is it's frequent 'numbers' articles which raise awareness of fascinating facts and events from a broad range of subjects.
Be warned, there can be a little bit of choice language but here are just a few of those articles I have enjoyed (click to view):
7 Bizarre Ways You Didn't Know 9/11 Changed the World
The 6 Most Insanely Misguided Attempts at Viral Marketing
5 Powerful Sci-Fi Technologies Wasted by Their Own Movies
6 People You've Never Heard of Who Probably Saved Your Life
Of course, these are just a few examples of their vast selection so why not visit for yourself?
I haven't read Cracked for many years, but it was a huge of part of my daily internet culture addiction. That 9/11 article I link to remains one of the most fascinating posts you'll ever read.