No no only some paid surveys are a scam, if yuo join the ones with dodgey names your asking for trouble.
I do alot of them well because i cant work atm. Some have rules to stop payment congestion like, you have to earn a minimum of $20 before they will send your check os something like that.
Some blatently scam your from word go aswell.
These paid surveys
http://www.techagesite.com/Surveys%20page1.htm from this surveys site is the one i used to sign up to surveys when i fist started hearing about them. They will not rip you off.