Google's patented PageRank algorithm utilizes The Intentional Surfer Model. What is The Random Surfer Model a model of?

There are 7 symbols that Google recognizes to have special meaning. Which of the following symbols is NOT on that list?

If your Google search uses confusing or nonsensical search phrases (eg banana wingbat England), what will occur?

How do you hide personal search results?

What is the best way to search for photos of people only in the Images section? (By filtering out inanimate objects).

If you search for the term “iq test” in the Word Tracker keyword suggestion tool, will it return the number of independent searches for the term “iq”?

What happens when you include double quotes around a phrase when searching?

Formerly, if you wanted Google to include only a specific word, and not just similar words, you used a plus sign, like this: [ +purple ]. What does Google now use in place of this syntax?

What does the symbol ~ do when you put it in front of a word in your search?

If you google "site:youtube.com bird watching", which will you find in your search results?

Searching for "cache:example.com"...