A nice example of the value of a graph: here is a network chart generated with NodeXL that represents the connections between products and producers that may be tainted with peanuts that have food poisoning. From Doug Finke’s Development in a Blink blog:

If you have any examples or samples of informative network diagrams (particularly any generated with NodeXL) send them my way or post them directly on the NodeXL message board.
Peanut tainted product and producer networks, as seen in NodeXL http://bit.ly/l1p3 – good e.g. of value of network graphing/visualization.
RT @LLiu: Peanut tainted product and producer networks in NodeXL http://bit.ly/l1p3
RT @gutelius @LLiu: Peanut tainted product and producer networks in NodeXL http://bit.ly/l1p3 nice catch Dave, thanks!