Thought I'd re-post this after 12 months in the wilderness. A friend reminded me of this today after telling me he received $2.80 over the past few weeks for answering a few questions. Enjoy :)
Answer quick surveys and earn Google Play credits with Google Opinion Rewards, an app created by Google Consumer Surveys.
Getting started is easy. Download the app and answer basic questions about yourself. We'll then send you surveys around once a week, although it may be more or less frequent. You'll get a notification on your phone when a short and relevant survey is ready for you, and can receive up to $1.00 in Play credits for completing it. Questions can range from, "Which logo is best?" and "Which promotion is most compelling?" to "When do you plan on traveling next?"
Mod: We have allowed this post as it does not break duplicate rules for a deal post. However with such time passing, we will see this as free software in the future, rather than allowing it to be posted as a deal again. Thanks
Haven't had any new surveys for 3 months now, though I do still have $35 in credit :)