Click on the Undecided tab from the Mahalo Answers front page and you will be brought into the queue of undecided questions. The questions by default appear in the order of Newest to Oldest, you can select a different way to sort questions.

When you enter the question you will be presented with all the answers that were provided on the question during the time when the question was open. All the answerers names are hidden so that there is no favoritism based on usernames. Everybody has an equal shot at getting best answer. Click the vote button to support the answer that you believe is the best.

If you are unsure what makes a best answer, read the helpful Mahalo page - How to get a best answer on Mahalo, try to find the answer that best addresses the users question and that provides all the elements of a great Mahalo Answer.

If the answer is truly fantastic, consider providing a comment of appreciation and even nominating the answer as the Answer of the Day.

In the event that no answer falls into the criteria of being a best answer select the "No Best Answer" option, your vote will still count, and you will still get your point. We feel is a greater service to the community and Mahalo Answers project if you do not reward users for simply answering questions, we only want to reward the users to provide best answers. Don't be afraid to choose this option.

Double Black Belt @buddawiggi explains how he makes his voting decisions. - Read it here on Mahalo Answers read more reasons why sometimes choosing "No Best Answer" is the best option here