I found a really neat article on this topic (found in another thread), which pretty much sums up Data Entry in a nutshell.
You’ve seen the ads EVERYWHERE:
“Now hiring clerical home (ad) typists! Work directly for our company. Get paid for (every response to your ad or every ad typed). No experience necessary. No selling. Positions available worldwide.”
There are several companies on the internet that advertise the availability of "home employment" through home typist or ad typist "jobs" with their companies.
But, if you've thought about joining any of these programs, and if you’re a newcomer to making money online, you'd be well advised to learn about affiliate marketing and how affiliate marketing works BEFORE you pay a fee to sign on with any of these programs. That way, you can make a more informed decision as to whether or not these opportunities would be a good fit for you before you fork over your money.
The truth is, if you sign on with any of these companies hoping to be "employed” as an "ad typist," "home typist," or "independent typist," you will not be "hired" as an "employee" of the company as their advertising suggests. These companies actually operate an affiliate program (also known as an associate program), and once you pay to join, your success with the program will depend upon your knowing how to market affiliate programs.
While you might want to believe that you'll make tons of money by simply typing ads (and, that’s what they want you to believe), the truth is, simply typing ads on classified ad sites is not going to help you to earn a decent income. Ask any experienced internet marketer, and if they're honest, they will tell you that you cannot generate a full-time income on the internet by simply engaging in this single activity. In fact, many will tell you that advertising on classified ad sites doesn't work.
According to Cathy Bryant, owner of HomeBizJunction.com, "Joining affiliate programs helter-skelter and trying to promote them individually via inefficient means such as classified ads, safelists, and other forms of ineffective advertising is an exercise in futility. It is this method of promotion that is often used by the newcomer online and results in their frustration and belief that earning an income with these programs is impossible."
And, that's what makes these "ad typing" programs a questionable business. They target individuals who have no internet marketing experience (most, if not all, of these programs advertise that no experience is necessary), and promise them that they will engage in a simple activity (typing ads) that can result in an adequate income.
To make matters worse, they publish testimonials of income earned by experienced internet marketers, but do not disclose this fact. This gives the newcomer the false impression that one has the potential to earn hundreds of dollars per week, having no prior experience, by simply "typing ads."
Most often, the opposite is true. So most newcomers do one of the following AFTER they pay their fee:
a. they spend hours a day, day after day, typing ads all over the internet for very little or no pay,
b. they spend hours and hours typing ads, and give up in frustration (and with no return on the fee they paid),
c. they spend hours and hours typing ads, give up, and request a refund, but are denied the full amount they paid to get into the program, or
d. even though they were told that typing ads was all that they would have to do to earn an income, they realize that typing ads alone doesn't work, and so, after having paid a fee, they begin the process of learning how to make money as an affiliate marketer (which is what they could have done for FREE had they known up front what they really getting into).
These "home typist" programs charge upwards of $60.00 or more, and I've yet to find one that will guarantee to give you a full refund should you enter the program, AND THEN realize that it's not what you were looking for. So, to avoid losing any of your hard-earned money, be sure to take the time to learn all that you can about a “home employment” offer, and about what you'll REALLY need to do to make money in it BEFORE you say “yes.”Source