But instead of just typing in a phrase and wading through page after page of results, there are a number of ways to make your searches more efficient.

Some of these are obvious ones, that you probably know about. But others are lesser-known, and others are known but not often used. Use this guide to learn more about, or be reminded of, some of the best ways to get exactly what you’re looking for, and quickly.

1. Either/or
   Google normally searches for pages that contain all the words you type in the search box, but if you want pages that have one term or another (or both), use the OR operator — or use the “|” symbol (pipe symbol) to save you a keystroke. [dumb | little | man]
2. Quotes
   If you want to search for an exact phrase, use quotes. ["dumb little man"] will only find that exact phrase. [dumb "little man"] will find pages that contain the word dumb and the exact phrase “little man”.
3. Not
   If you don’t want a term or phrase, use the “-” symbol. [-dumb little man] will return pages that contain “little” and “man” but that don’t contain “dumb”.
4. Similar terms
   Use the “~” symbol to return similar terms. [~dumb little man -dumb] will get you pages that contain “funny little man” and “stupid little man” but not “dumb little man”.
5. Wildcard
   The “*” symbol is a wildcard. This is useful if you’re trying to find the lyrics to a song, but can’t remember the exact lyrics. [can't * me love lyrics] will return the Beatles song you’re looking for. It’s also useful for finding stuff only in certain domains, such as
   educational information: ["dumb little man" research *.edu].
6. Advanced search
   If you can’t remember any of these operators, you can always use Google’s advanced search.
7. Definitions
   Use the “define:” operator to get a quick definition. [define:dumb] will give you a whole host of definitions from different sources, with links.
8. Calculator
   One of the handiest uses of Google, type in a quick calculation in the search box and get an answer. It’s faster than calling up your computer’s calculator in most cases. Use the +, -, *, / symbols and parentheses to do a simple equation.
9. Numrange
   This little-known feature searches for a range of numbers. For example, ["best books 2002..2007] will return lists of best books for each of the years from 2002 to 2007 (note the two periods between the two numbers).
10. Site-specific
    Use the “site:” operator to search only within a certain website. [site:dumblittleman.com leo] will search for the term “leo” only within this blog.
11. Backlinks
    The “link:” operator will find pages that link to a specific URL. You can use this not only for a main URL but even to a specific page. Not all links to an URL are listed, however.
12. Vertical search
    Instead of searching for a term across all pages on the web, search within a specialized field. Google has a number of specific searches, allowing you to search within blogs, news, books, and much more: 
    • Blog Search
    • Book Search
    • Scholar
    • Catalogs
    • Code Search
    • Directory
    • Finance
    • Images
    • Local/Maps
    • News
    • Patent Search
    • Product Search
    • Video
13. Movies
    Use the “movie:” operator to search for a movie title along with either a zip code or U.S. city and state to get a list of movie theaters in the area and show times.
14. Music
    The “music:” operator returns content related to music only.
15. Unit converter
    Use Google for a quick conversion, from yards to meters for example, or different currency: [12 meters in yards]
16. Types of numbers
    Google algorithms can recognize patterns in numbers you enter, so you can search for: 
    • Telephone area codes
    • Vehicle ID number (US only)
    • Federal Communications Commission (FCC) equipment numbers (US only)
    • UPC codes
    • Federal Aviation Administration (FAA) airplane registration number (US only)
    • Patent numbers (US only)
    • Even stock quotes (using the stock symbol) or a weather forecast regarding the next five days
17. File types
    If you just want to search for .PDF files, or Word documents, or Excel spreadsheets, for example, use the “filetype:” operator.
18. Location of term
    By default, Google searches for your term throughout a web page. But if you just want it to search certain locations, you can use operators such as “inurl:”, “intitle:”, “intext:”, and “inanchor:”. Those search for a term only within the URL, the title,
    the body text, and the anchor text (the text used to describe a link).
19. Cached pages
    Looking for a version of a page the Google stores on its own servers? This can help with outdated or update pages. Use the “cached:” operator.
20. Answer to life, the universe, and everything
    Search for that phrase, in lower case, and Google will give you the answer.

What do you think about Google’s being on Number one? Do you think Google is a revolutionary product or search engine? It may be true? But This is not the reason for being on Top. They are top marketer I believe.

They had only one product it was search engine now they have thousands of companies and the companies are not started by Google. Google Inc. acquires daily a new startup.

I know Google fears so much about being lost in dust of time. It is trying to become an skynet. Google is so much conscious about its existence. In coming future some company can replace Google. Who will do it Google have some guess about it.

I do not use Google docs frequently but it is a nice online tool and it is getting better and better. It was already supporting many file types but its new update is sporting more file types and now it will be more useful. You can use it as a document viewer because it supports many of file types.

I use Google docs to view email attachments.

Now you can open Photoshop, Adobe Illustrator, fonts (TTF), AutoCAD files in Google docs.

Here is list of new supported document types that you can view in Google Docs. Recently Google added 12 new file formats in Google docs viewer.

• Microsoft Excel (.XLS and .XLSX)
• Microsoft PowerPoint 2007 / 2010 (.PPTX)
• Apple Pages (.PAGES)
• Adobe Illustrator (.AI)
• Adobe Photoshop (.PSD)
• Autodesk AutoCad (.DXF)
• Scalable Vector Graphics (.SVG)
• PostScript (.EPS, .PS)
• TrueType (.TTF)
• XML Paper Specification (.XPS)

However you will not be able to create these files only you can view. To do things work for you jus upload a document.

Go for Google Docs