Usurv asks 100’s of people to answer questions.  This contrasts with services like Yahoo Answers where often only one or two people may give an answer to a specific question.

The type of questions that can be asked are also different.  Usurv's questions are structured where a list of answer options are presented to potential participants (e.g.  Which of these contestants do you think will win the X Factor? / Would you recommend your mobile phone to friends / family). 

Using a service like Yahoo Answers, the questions are not structured (e.g. Why is the sky blue?) and there is no pre-defined list of answers.