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'Undefined Flying Object' or commonly known as 'UFO' is undoubtedly one of the most well-known topic to us. Since the beginning of human civilization, we are amazed on objects or matters, which we cannot define. We take the most active part in discussions related to the undefined matters. The eagerness to define the undefined gets boost through these discussions which include a few facts, some imaginations and some exaggerations for sure.

What is UFO? Theoretically, any flying object which we cannot include among the known flying objects, such as – airplane, rocket, helicopter, kite, bird etc, should be called UFO or 'Unidentified Flying Object'. But what we assume is that any flying object that does not belong to earth or not made on earth, should be called a UFO. We have a notion that a UFO must be an extraterrestrial object.

What is Pi or Pie ?

Do you know what is pi or pie? Do you know what is the value of pi or pie ?

If you know, that is great. But if you do not know, please do not worry. Find some useful informations below.

- A mathematician: "Pi is the ratio of the circumference of a circle to its diameter."
- A computer programmer: "Pi is 3.141592653589 in double precision."
- A physicist: "Pi is 3.14159 plus or minus 0.000005."
- An engineer: "Pi is about 22/7."
- A nutritionist: "Pie is a healthy and delicious dessert !"

Many of the SEO people even us, the general people, are sometimes become much eager to know the keyword trend or keyword ranking or sometimes the popularity of keywords or websites. Because if we have to popularize our website, we have to concerned about a few points such as - contents, keywords, ranking etc. As google.com is the most popular search engine today, we generally focus on Google. There are some ways to find popular keywords, most searched terms, increasing searched words etc. Without banging your head here and there, we can use google itself to gather some knowledge.

Have you heard about Google Zeitgeist ? Zeitgeist means "the spirit of the times". Google presents the aggregated results of thousands search queries around the world. There are several tools to look into these data results with the customization, you want.