I don't know about referrals, it can work of course but the trick is to send out links daily. Or if you have a website, blog or store then you can post the link there for referrals.
For me, I spent only about 9 hours the first month which netted a little over 20$, after two months I doubled that amount and cashed out.
Now I am back online (lost the computer for about three weeks) and back at it. So averaging about 12-15 hours a month.
My routine for easy money is as follows:
Click the daily email,
Click the 15 cent daily task (view webpages) Theses two alone will net 75$ a year but remember the credit timeframes!
Then surveys from Fushion Cash (you are automatically redirected after the 15 cent task or you can find them in the "Daily Offers"
Then check the videos (easy to run and 1cent each which if you do 5 its the same as the first two tasks add another 75 $ a year. )
My personal favorite is the Paid to Call, (credit varies but 1-3$) These are simple listen and ask questions. I always qualify the beginning of the conversation with "I am looking for more information about your (insert product here). This helps me because then I feel I am being honest about the call.
(These are awesome for quick money because 3 minutes is about 3 sentences)
Then its purusing the site for interesting offers. Daily I can make 2-5$ which given the circumstances (no videos or any more paid to calls for the month) then I can make 25-30$ a month.
Human intelligence tasks are fun too, payout is small but remember this:
An old Mathematics problem:
" If I paid you a penny a day, and every day doubled your pay; How long would it take for you to earn a million dollars?"
The answer is about a month....
Pennies add up my friend,
~ happy hunting!