So you use facebook? Well, everyone does. Ever seen the url of an image on facebook. Noticed something? If you haven't then open any image, right click on the image and open the image in new tab or copy the image url.

The image url would look something like this:

https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-ash3/t1.0-9/559061_433255360074095_1251688875_n.jpg

Wonder what is akamaihd.net doing in the url of a facebook image? Actually, your facebook images are not hosted on facebook server. Facebook uses Akamai Technologies to host images. Surprised? The reason behind using Akamai is that it is a CDN (Content Delivery Network). What a CDN doesn is that it takes your data (facebook images in this case) and place it on many servers all over the world. So whenever you open an image, a request is sent to nearest Akamai server which helps the images to load faster.

Imagine that your images are stored on facebook server (say in India) then Indian users will get the response much faster but for the users living in USA or any other far away place, it will take much time to get the response from the servers. CDN helps the users get their photo in the minimum time delay.

Akamai is promounced as "ACME". Looks familiar? If you have ever seen roadrunner then you also must have noticed that all the products used in that cartoon are from Acme Co. which fails when they are needed the most. Anyways, it has no relation with facebook. Don't think that just like Acme products, Akamai servers will stop working some day.

Wanted to know more about facebook url? Then don't forget to check our post on how you can find a facebook profile through the url of an image. Your feedback is valuable to us so don't forget to tell us about your views through the comments below.

If you have used facebook app in your mobile then you must be aware of the stickers we can use while chatting with friends. Now to the series of updates facebook is adding, here is an another update where facebook brought the mobile stickers to web chat.

Many of you must be aware that Microsoft recently launched Windows 8.1 (Preview Version) also known as Windows Blue (You can download it from here). So in this post i am going to show the changes Microsoft made to make Windows 8.1 better and more efficient than Windows 8.

Apart from the new features of windows 8, you might have noticed that the some of the features of previous versions of windows are missing in windows 8 like setting up of ad hoc network. Previously users could easily create a ad hoc network share their internet connection with other people which is very useful if you are using data card to surf internet. Ad hoc network are also very useful for sharing files and  playing multiplayer LAN games but as this feature is missing in windows 8, it's a big problem for all the people.

Today i am going to share with you all a video describing the features of windows 8 which i created for the round 1 of Microsoft Student Partners Program 2012. Along with the video i have also written some features of windows 8 which you might like.

Google now supports multiple logins from the same browser which means you do not require to sign out of your google account or use different browser for getting access through another google account. If you are a person like me who like to have multiple accounts for different works then this feature will definitely make your work easy.

Most of the people who use Google doesn't know that there are some special commands through which we  can find only the specific results that are more useful to us than what we get without these commands. The list of commands are called Google Dorks. Google Dorks are also used by many of the hacker to find vulnerabilities in sites. You cannot even believe that after using it, you might even get your desired result as the first link on the page.

In this post you will learn a simple trick using which you can see hidden passwords behind asterisks or dots on almost every site like Gmail, Yahoo, facebook and many more. The trick is really simple and do not require any coding skills or software.

It might have happened with you that one of your friends shared an image URL with you from facebook and you liked the image so much that you wanted to find the facebook profile of the person who actually shared it. So in this post i am going to tell you how you can find the profile of the person who shared the image using the URL only.

In one of my previous posts on Windows 8 Release Preview i told you that the commercial version of windows 8 is expected to be launched in the fourth quarter of the year. Finally Microsoft announced the date for the it's official launch. Now you can mark a date in your calendar for the final release of windows 8.

After the launch of Windows 8 Release Preview, Microsoft finally launched the much awaited Microsoft Office 2013 Customer Preview. Like always before the final release of it's product, Microsoft launched it's preview so that it can improve the product by getting customer feedback and make the final version free from bugs and errors.

It is reported that by 9th July, Monday 250,000 users will loose access to internet. A virus named DNS changer has infected the users. FBI warns that if not cured these users will loose internet access by this date.

Today i installed windows 8 Release Preview in my computer and connected my live account with it which was having a password of more than 16 characters. Everything was working fine until i restarted my computer. After the restart i found that i am not able to log in to windows 8 with my live account.

In this post i will tell you a trick by which you can play the very famous snake game on any youtube videos while they are buffering. In the meantime while the buffering takes place you do not have to get bored instead you can play the game on the same video without affecting the buffering speed. Once the buffering completes you can continue watching your video.

Today i am going to tell you a method using which you make your files and folders completely hidden so that no one can even search them if they are present in your computer. You can access the files and folders but cannot see them present there. Method includes the use of simple command without using any software.

In computer files like pictures,videos,movies etc access this file called thumbs.db to show their thumbnails and this the reason why you see thumbs.db file created in your folders. But we all don't like this file so there is a method which today i am going to share by which you can turn these files off so that in future no such file will be created in any of the folders.

In one of my previous posts on how to block/unblock sites i told you how you can block sites without the help of any software and today i am going to tell you how you can access such blocked sites. You do not require any extra software.

Many times it happens that you want to go somewhere and some application is running on your computer which you cannot close at that instant. Now leaving the computer in on state will consume lot of energy and is not at all environment friendly method. So the solution is that you can set the timer so that your computer will automatically shutdown after the time you specify. So in this post i am going to tell you how you can set a timer for your computer without using any software with just one command.

Due to the fear of viruses that are spreading in the world at an alarming rate, we install some kind of antivirus in our computer like Kaspersky, Eset Nod32, Mcafee, Norton etc. But after installing also the problem is never solved. Everyday new viruses are created which firstly attack our antivirus and destroy it making our system unprotected so from time to time it is very much necessary to test whether our antivirus is really working or not. Today i am going to tell you how you can create a harmless antivirus test file.

We all are interested in increasing our internet speed by any amount so today i am going to tell you about a simple tweak you can use to get the maximum speed which your ISP is actually providing you. By changing the DNS servers we are using with the right one, we can actually increase our speed to some extent. Let's boost our internet speed.