I was hoping this would be about the insect spiders. I have one staring at my right now on the counter near my laptop.
Spiders are web crawlers. They're used in search engines to gather data about particular websites and when a search is entered in, say Google, for 'atheism' or 'amputees + god' or 'why wont god' depending on the criteria of the search WWGHA will be one of the top results, bring people to that site. . They're important in search engine optimization.http://en.wikipedia.org/wiki/Web_crawler
They're legit and good to have around.