Practice
As with anything, the more you practice the better you will be at guessing the most popular answers. Watch the game on TV and play along with the contestants by guessing the answers. This will give you an idea of the type of questions and answers the surveys produce. As you play along, you will see if your answer is included on the board and learn how to choose the best answers.
Strategy
One of the rules is to "play or pass" when a person on your team wins the first question. If you choose to play, your family will continue guessing and if you pass, you turn it over to the other family. One strategy you can use for a difficult question is to pass it to the other family in order to stump them. If they are unable to guess all the correct answers, your family will have the chance to guess and only needs to get one question right. Overall, this can help you to rack up points and possibly win that round.
Think Fast
In addition to guessing the most popular answer, you have a time limit. This requires you to think quickly. Some people will say the first thing that comes to mind, even if it's not a relevant answer, which can keep their family from gaining points or winning. Before blurting out an answer, take a second to think in order to come up with the best answer.
The online game has some differences from the TV game. For example, cash is the only prize on the TV show, while online you can choose and swap prizes with other families. One of the tips is to buy prizes from the prize ship with the money you earn to get more plays and advance in the game. Send invitations to people you know will play the game to increase your network of friends and your chances of advancing. When it comes to "fast money", the part of the game where you can win the most, your friends can help you to earn points. Play "fast money" off their wall or invitation to earn points for yourself and them.