Paid Survey/SignUp, Tips

Before exploring the free paid to survey/signup sites, here I would like to share some of the tips I am using when I am doing my surveys/signups.

1. Sign up multiple email addresses for each survey sites. For example, I have an account on CashCrate. It provides many surveys, so what I do is I use one email address for each survey. Be sure you record your email password somewhere because sometime you might need it.
2. Do at most 7-10 surveys from one website.
3. Choose to use Firefox or IE. Personally I prefer Firefox since it usually safer than IE, and it can block more popups when you are doing survey. BTW, firefox if open source.
4. Clear you cookies when you finish maybe every 5-7 surveys.
5. If you want to earn more by doing trial offers, use virtual credit number (Citi cards offer it), or you can by prepaid visa/master card. Remember to cancel your membership before free trial expires.
6. Referrals. Try to find referrals by blogging, sending out fliers, or posting in forum. No scams please.