CNN reported the more than 99% of these sites are scams.
Pure scams.
They said they could not verify the remaining 1%.
Good luck beating these odds.
Remember, just because you are not paranoid does not mean they are not out to get you.
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References :

Most Home working Companies are scams, Don’t pay them anything.
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Previous Experience!!

I do agree that it is difficult to find legitimate companies on line providing work at home opportunities. However, I am here to let you know that this is possible. You can find legitimate jobs to do at home. I have, and I do get my weekly paycheck. This is not a get rich quick scheme, I am doing the same job that you would do in a brick and mortar office, the difference I have a home office. I choose my own schedule and have time to do all the things I enjoy doing. Since you have typing skills you might find that you may be able to transfer your skills to other areas. You may want to look into other legitimate jobs that you can work from home. Check out the site below that was invaluable to me in my search to find the perfect job.
References :
http://homeshoringmadeeasy.blogspot.com