Well, I'm a bit interested by using thoses statistics for studying prupose about how people are networking.

The fact is if  you know how people connect to each others and why, you'll know what are the keys and revelent factors of networking.

In this case, Statistics are relevent when you know which are the most popular flyers, and make from all of this an general rule (Who, Why, How, How much, What, ...) to increase the relevance of networking effects. Marketing, and publicist i'am shure are really interested about that :)