I'll feature all of them on this blog eventually, but today I will focus on two: TestSpin and Valued Opinions. Both of these survey companies send out survey invitations quite frequently, though I don't always qualify for their surveys. When I do qualify, however, the surveys are usually worth $2.00 to $5.00. Not bad for usually less than 20 minutes of my time.
TestSpin and Valued Opinions both offer Amazon.com gift certificates for participating. Almost immediately after requesting a distribution, the gift codes are in your e-mail, ready to be spent. Today, I requested $60 worth of gift codes between the two sites. I needed to replace an out-of-print piano accompaniment book, which was listed on Amazon for $43.65. I also decided to get the clarinet version of the book (an arrangement of hymns for solo, duet, or trio) for $9.95. I already have the flute version.
After redeeming my $60 in gift certificates, I paid $2.64. Gotta love it! I promise to keep better track of my piano accompaniment book from now on (read: never lend it to my accompanist again)!