Look at this scenario:
Month | Account level | Earnings (per month)
Jan $1000 $300
Feb $1300 $390
March $1690 $507
April $2190 $657
May $2850 $855
June $3710 $1113
July $4820 $1446
Aug $6270 $1881
Sep $8150 $2445
Oct $10600 $3180
Nov $13780 $4134
Dec $17920 $5376
By upgrading your account, you also need to surf only 100 sites a day instead of 200. The minimum upgrade is $10 and they have all payment processers including Stormpay, e-gold, paypal, and credit card. This is an amazing site! You also earn credits for surfing sites. You can use them to advertise your own site. This site is totally legitimate and has already sent out hundreds of thousands of payments! They are open to ALL countries but Vietnam and Pakistan.
Another BIG Payout proof:

Another HUGE Payout proof:

If you want to see proof of people getting paid go here:
http://www.studiotraffic.org/forum/forumdisplay.php?f=9
Sign up under my ref link to get $10 free when joining! http://www.studiotraffic.com/index.php?refid=105817 Thanks!