well i agree there are too many scam sites. i myself have to go through around 75 sites to just come across one good one yes email addresses most sites take for spamming ofcourse
Check out a couple of affiliate programs im in that earn me a few extra dollars a week, www.onlinemoneymakin.com You just have to get your links out there and work at it everyday. The first thing i learnt about IM is that there is No FREE Lunches. Hope this can help.
If are a gifted writer and you think you work hard,Triond is the best site to make money more than 20$ daily. I earn 200$ monthly average even though I am a very lazy man and not a gifted writer.
If you really wanted to make $20 via Paypal a day, its not hard at all. I just set up a competing posting service and its doing pretty well, all payments via PayPal too
have you looked into affiliate marketing? try googling affiliate companies and start selling their products. that should help you with your reasonable target of $20 per day (and even much more).
In a day I was spent $32.50 for a few hours working for different people, mostly article writing though. You won't earn $20.00 easily, but it's possible to earn it in a few hours depending on what you do, I write articles, I'd need to write 20-30 200 word articles to earn $20.00, which depending on the nicche can take between 2 and 4 hours to complete, but this is multitasking.