There's so many web apps today, it's hard to keep up with them all. From the apps we've all used for years such as Gmail to newer apps that just came out this year such as Flow, web apps have increasingly become a part of our daily lives.
Search engines are, in a sense, the heartbeat of the internet; "googling" has become a part of everyday speech and is even recognized by Merriam-Webster as a grammatically correct verb. It's a common misconception, however, that googling a search term will reveal every site out there that addresses your search. In fact, typical search engines like Google, Yahoo, or Bing actually access only a tiny fraction - estimated at 0.03% - of the internet. The sites that traditional searches yield are part of what's known as the Surface Web, which is comprised of indexed pages that a search engine's Web crawlers are programmed to retrieve