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Rube Goldberg Machine January 12, 2011

Posted by viboon in : Science and engineering , add a comment

This is an ad of Google Science Fair Experiment 2011.


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Google introduces Chrome Notebook running Chrome OS January 3, 2011

Posted by viboon in : Uncategorized , add a comment

Once things are on the Cloud, there is nothing to worry about.


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Prevent your site from search engine indexing November 22, 2009

Posted by viboon in : Uncategorized , add a comment

First method: Create “robots.txt” in the root directory. For example, http://www.mysite.com/robots.txt.

It is only a 2-line text file as followed.

User-agent: *
Disallow: /data1/

asterisk (*) means that the statement is applied to ALL search engines.
/data1/ is your directory to be forbidden from search engine indexing

If you want to disallow the indexing from Google, use Googlebot instead.

User-Agent: Googlebot
Disallow: /data1/

Or only the images in ‘data1′.

User-Agent: Googlebot-Image
Disallow: /data1/

It can be applied for the whole site, a single file or extension.

User-Agent: *
Disallow: /
User-Agent: *
Disallow: /private.html
Disallow: /data1/*.pdf$

Second method: In the case that you are not allowed to access to the root directory. Add a META tag in the HEAD section of every HTML file you want to prevent.

Again, the NAME must be ROBOTS to prevent ALL search engine indexing. To block the Google indexing only, use GOOGLEBOT instead.

Ref:
- http://www.robotstxt.org/
- http://www.metatags.info/all_meta_tags
- http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=156449


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