The Black and Yellow Garden Spider is an orb weaver of the family Araneidae. These are “sit and wait” predators. They are known for their fantastic and artistic webs, on which they wait for unsuspecting prey to become entangled. Many species in this family also construct a stabilimentum, or extra webbing in a pattern around the center of the web; the purpose of this structure is debated. Many think that it contributes to the capture of prey, either by camouflaging the spider, making the rest of the web less visible, or as a lure.
The orb weavers are harmless to human kind, though some humans dislike them anyway. How unfair is that!?