What a Botnet Looks Like
Esther Schindler writes "CSO has an annotated, zoomable map of real botnet topologies showing the interconnections between the compromised computers and the command-and-control systems that direct them. The map is based on work by security researcher David Voreland; it has interactive controls so you can zoom in and explore botnets' inner workings. Hackers use botnets for spamming, DDoS attacks and identity theft. One recent example is the Storm botnet, which may have comprised 1 million or more zombie systems at its peak. As with any networking challenge, there are good (resilient) designs and some not-so-good ones. In some cases the topology may be indicative of a particular botnet's purpose, or of a herder on the run."
http://www.artsci.washington.edu/news/Autumn05/largermap_sexualnetworks.htm
If you zoom in, you'll see a lot of the concentration of spiderwebs are around sites like honeynet.cz.
And they don't particularly mind being ignorant as long as the equipment works right (or appears to). Just as most of us don't feel the need to understand how a car works in order to drive one.
Yes, but people are often more familiar with what a car needs. Regular oil changes, maintenance, gas; they might not know (or care) why the car needs these, but they know that if they don't, the car will fail to work.
People don't even know that much about computers, about what they shouldn't do, even if they don't know why.