Lots of teams use focus groups.  The purpose of a focus group is to gather information or learn from the participants, as input for decision-making.

Michael Goldman of FacilitationFirst.com offers up the "Top 10 Mistakes in Using Focus Groups" and how to avoid them.  Here are a couple of mistakes:

1. Calling a meeting or session that is meant to impart information, influence people, solve a problem, resolve conflict, or create a plan, a “focus group.”
2. Going ahead with focus groups before ensuring that the purpose for the session(s) is clear, including how the results will be used.

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