Way to Survey-Way to make money at home, paid surveys

I have seen a lot of websites and advertisements that claim you can get paid, only for filling out some surveys for free online. I was wondering if anyone has ever done this and if it is legitimate? I am pretty convinced it is already a scam when they ask you for your cell phone number and such, but I am still curious. I’m sure since there is enough of them, someone has had to of made some money from it. Please share your experiences!

I’m currently unemployed looking for work but there isn’t much out there to be honest.. What other ways of making money are there?

- not to sell my stuff
- not to join an MLM scheme
- no get rich quick schemes

dragonscale - tribal - elemental which is better
also for A hunter which woudl be more effective to use for myself?

I am doing a class essay about teen pregnancy and I need some mothers to take a some what personal survey.

The question itself is actually complicated, when you look at it in depth. Firstly, I want everyone to not worry about how I would go about publishing the book, marketing, etc. I also do not expect to make a living off of writing this book. I am simply thinking of it as a one time thing to make a tiny bit of extra money.

That being said, say I write a fairly decent YA novel. Since they are fairly popular these days, how many would I sell per month in the first year? I’m assuming that after the first year- if I do not endorse the book strongly it probably will fade away and die like many other books. The book would be hardcover, and probably published by some YA publisher (with hope). How many would I sell for the first couple months, and then, how many would I sell the next few? I was thinking around maybe 1000 books the first month, and then 1500-5000 thereafter, depending on how the public takes it. Does this sound accurate? Too much or too little? (I am personally thinking that I was being much too optimistic)

Then, what could I expect to make per book sold? If it is a $15-20 hardcover, then would saying I made $5 a book be accurate? This of course, would be before I paid my agent, marketers, etc. It would be great if someone could enlighten me on some better numbers. Thanks a lot for your help!
Trying to be more specific here- say they first run a print of 15,000 copies (being optimistic). If they sell all those, would they run another copy, so on and so forth?