According to their website, iNaturalist is an online social network of people sharing biodiversity information to help each other learn about nature. I like the idea of not only learning, but participating.
I uploaded some pictures and included when and where I saw the creature. Within a day, I received a response with an identification and information such as a map of the world and every other sighting of that particular insect. If you take a picture of an animal, bird, bug, or plant and want to know what it is, I recommend you give iNaturalist a try. The better the photo, the more apt they are to identify it. To my embarrassment, I learned that the spider above is actually backwards and hard to id but some kind of orb weaver. I liked him too much not to include him. The next one is a crab spider shortly after s/he caught a tasty meal.