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What is Captcha and how it works

Sanjeev Kumar Jaiswal's picture
What is Captcha?
CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart. In simple words it’s the technique to stop web spam. Now what is web spam? Ok, anything that is not relevant to the website but users (or automated bots) try to post comments, links etc are called web spams. Best example is advertisement of Nike shoe in any technical website like Alien Coders which has no relevance for that kind of comment or post. I will discuss about “Web Spam”  in detail in another article.

Alternative option for reCaptcha from Google

Sanjeev Kumar Jaiswal's picture
Alternative option for "reCpatcha from Google"
Catpcha LogoCAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart. (Yes, it really should be “CAPTTTCHA.” Don’t blame us; we’re not the ones who made up the term.) It’s a type of challenge test used on web sites to verify that the transaction taking place—the comment being posted, the account being registered, the vote being cast in a poll—is coming from a human and not a computer program. In addition to the examples mentioned above, CAPTCHA are used to block registration spam and contact form spam, to prevent scrapers from stealing email addresses and search bots from accessing private data, to deter dictionary password search attacks, and to preempt servers from getting bogged down by spam and malicious scripts.

Using Captcha may reduce spam but it would also reduce real comments/posts drastically :(

Gmail increased file attachment limit-[How to use]

Sanjeev Kumar Jaiswal's picture
Gmail Increased File upload limitI think majority of us use Gmail for mailing purpose at present followed by Hotmail , Yahoo and so on. In my previous post I had mentioned the Features of different mail providers and Minimal Reasons to choose Gmail for personal mailing system.

There are lots of reasons to choose mail providers, and the attachment size is definitely one of the top reasons to be considered. Recently, Google started to allow file attachment till 10 GB! Of course, there is something that you had to know before using large files as attachment.  I will try to provide an overview on how this large file size email attachment works in Gmail.
 

How different is Scour from other Search Engines?

Jena Branch's picture
People sift through all possible sources to gather information. They need relevant information in a short time. What everyone is running short of is time.
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[Solved] Problem in viewing Hindi font on websites

Sanjeev Kumar Jaiswal's picture

In my previous post, I explained the way to read/write hindi or different regional fonts in MS word using several steps.
Here is the quick reference of it.

You may face a situation when you open some website and you see only rounded or square symbols intead of real text. You are not able to figure out, what to do. Then my suggestion is to follow below mentioned steps. It will surely help to get rid of such issues. I am using Windows 7 to test these features.

[tips] How to use Google Search efficiently

Sanjeev Kumar Jaiswal's picture
I am using Google Search engine almost all the time since 2006 and learned lots of things to manipulate Google search in much easier way. I know I am little late to share this and you will have lots of such posts over the internet. But, presentation and thoughts for the same things are always different for different authors.  I would basically show you the real power of Google Search engine and strong evidence to prove that why I love and prefer Google Search Only :D
More than 80% internet users use Google Search engines followed by Bing then Yahoo etc…
You can download the pdf version of this article from here
 

How to Drive More People to Share and Subscribe Your Publications

If you are aiming to creating some special digital publications for online distribution to bring more visits to your web, or if you want to show your products in a unique way to attract potential customers, then you must make your publications worth-sharing, so that it can drive your readers to subscribe and share it with more people to increase its exposure. Stay here for a moment, you may need the below tips about how to create a stunning yet unique e-publications.

Simple steps to verify email id existence

Sanjeev Kumar Jaiswal's picture

Email id exists or notOur team always face email existence problem when they try to:

  • Verify the  registered account holder’s email id or
  • While sending mail to anonymous user who posted comment with some fake email id or
  • To check, if that email address is still valid (ex: 2 years back emailed was valid but not now)

Well it’s not possible to know 100% whether given e-mail address exists in real or not but it will be handy in majority of the cases. You can do it manually also if you are in Linux box using host or nslookup and telnet command. I would prefer host command for this purpose.

How to transfer the domain name easily

Sanjeev Kumar Jaiswal's picture
How to tranfer domain nameHow to transfer the domain from one hosting provider or registrar to other
It’s always important to host your website to a reliable web hosting service provider. But sometimes due to lack of knowledge or much experience on these things we register our domain and signup for the hosting plans. Although all renowned hosting providers are doing great job but I preferably choose either blueshost.com or godaddy.com

I had few issues with godaddy.com, that’s why I postponed the plan to host my domain there and finally chose bluehost.com as I was using it from last 2 years without any hassle and Customer Support Service is awesome. I liked online chatting also ;)

How to hide a file behind a jpeg file

hide folder optionSometimes it may happen that you have to share your computer with your family member. As it happens with me. I have a younger brother and I like to tease him so what I do is whenever he install any new games into my computer I hide the entire folder with the shortcut. When he tries to find it out he got nothing. So let’s work on it. Now I am going to share this tricks with you guys

By this trick, first we create a hidden folder and after that we will hide our important files behind the .jpeg image file. This second trick is very helpful for those people who want to hide some files from their friends; even I did the same thing during my college days. Usually I hide my entire assignment file behind a jpeg image (every time I use an image of donkey).

How to hide a folder?

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