Believe it or not, sometimes learning new [educational] facts on the Internet is the best way to pass time. I like this site simply because there are numerous categories of trivia and whatever catches your attention you are bound to find pretty interesting information about it. My personal favorite categories: geography, language, and superstitions.
I love this site because it gives you so many options on how to exercise your brain on the daily basis. I stumbled upon this site a month ago and have come back to it quite often. “Mentorobics” has this simple game that tests your reaction time. A blank square appears and you have to click on it as soon as a color square appears. A good reaction time is 0.20 seconds. The first time I did it took me 0.48 seconds. Instantly I wanted to do better so I kept at it until I got 0.19. Seems easy? You'll see! And of course, the trivia quizzes are pretty hard so that'll keep you busy for quite some time…trust me.
This is just a classic site on how to fill your brain with useless information, nonetheless, very entertaining. I would say this is a guilty pleasure site because it has superficial links to: guess that celebrity, age guessing game, name humor, and my personal favorite “which is worse.” There is something in this site for everyone. If you have time in your hands and clearly don't feel like being productive, then you have found your stop.
Sometimes I get a nerd kick and feel like actually learning something. This is a great site if geography is one of your interests. Clearly, it is one of mine. It's a pretty thorough site if you are looking for a specific time period and country. If you enjoy learning facts about other countries, this is it.
If you have always wanted to travel somewhere or are planning to go somewhere, this is a very resourceful site. One is because people are actually experiencing what is typical of the region. Two you get to see photos of the place as is right now. Lastly, you go better informed (through journals) than if you had read five books about that place. If you are not traveling any time soon, live vicariously through someone else!