1. If node X is connected to several influencers in an online community on a single day, which of the node Xs metrics is increased the most on that day?

2. When node X posts a message in a social network, which of the metrics is the most salient to find out how fast the message will reach the desired audience?

3. An advertising agency is searching for influential people in the area of fitness advice and workout tips to promote fitness products. Which metric should they use to search for influencers in a social network?

4. In the network of academic research, a publishing company needs to find an author who is cited the most by other well-cited authors, what metric should they look at?

5. What metric is used to identify important nodes without which network components would fall apart?