Meetoo provides suggestions for effective polling during presentations: - Carefully plan questions to avoid ambiguity and engage audiences with thought-provoking questions. Fewer, high-quality questions are better than many trivial ones. - Introduce the polling process and ask a warm-up question to familiarize audiences. Comment on and discuss results to avoid offending audiences. Be flexible and reactive to audiences. - Polling formats include single choice, multi-choice, comparisons of before/after polls, recalling hidden results, and aggregating multiple polls. Creative bar designs can make polls more visually interesting.