You can read about an extensive criticism of Google+, why companies might fail at international expansion, or even the reason it’s bad to eat right before going to bed. It’s fascinating to read, and remarkable how people are willing to describe, explain, and debate at such a high intellectual level on the Internet. To me, it’s an alternative to the more basic entertainment of reddit, though I haven’t been able to contribute much in terms of answers, mostly due to my lack of deep expertise in any one topic. I definitely recommend it if rage comics or cute kittens isn’t enough for you.