A Google "PageRank" lookup can be a valuable clue to a website's integrity.
Google's ranking reflects the good standing of the website in the internet community. Even if you use Yahoo! or Bing, you can benefit from Google's opinion of a certain website.
Google carefully chooses reputable websites to appear in the top listings of their search results. Google values websites that get "endorsements" (links) from other well-known websites.
Google's "PageRank" is one of the many factors used by Google's Search Engine Algorithms. The PageRank that Google reveals to the public is not frequently updated, and therefore, should be taken with "a grain of salt".
The "people" icons represent an estimate of how many people worldwide visit a website.
The chart below provides an approximate estimate of how many US monthly users each of the "International People" represents.