Answers:
Many Spammer use programes for automatically creating several accounts of artificial identity, the number of accounts may be thousands. They also use form satisfying softwares and they simply run them. To stop this type of actitivities copious website put a special code contemporaries utility which generate unmatched code for every side and user hold to manually type this code contained by the box to successfully crate an side
This is call CAPATCHA.
It is used so a "bot" or a robot that can automatically sign up for hundreds of accounts faster later you can sign up for one cant be used. A robot cant read the symbol and type the word contained by.
You type it surrounded by to prove you a human and not a robot.
Spam is typically generate automatically on a computer. A computer sends thousands of messages to the website all at once.
The descriptions (called CAPTCHA) minister to prevent spam because the computers enjoy a difficult time reading them.
You are asked to type the word you see in the picture because, at tiniest at present, individual humans, not computer programs, can read a word presented as a distorted picture.
This prevents someone from writing a computer program to, read out, buy 10,000 concert tickets online inwardly the first 60 second that they jump on public sale.
The "word as an image" is set as a captcha; more info in the relation.