Love this quote from Sergey Brin from 1999 (how things have changed!):<p>"Google's slightly different in that we never ban anybody, and we don't really believe in spam in the sense that there's no mechanism for removing people from our index. The fundamental concept we use is, you know, is this page relevant to the search? And, you know, some pages which, you know, they may almost never appear on the search results page because they're just not that relevant."