I guess it's just always important/helpful to keep in mind that the average is almost certainly going to be misleading when the distribution is extremely skewed, as is the case for household income. It's usually a mistake to talk about averages in these cases, when the median is almost always going to be more meaningful.
Agree, but can't we just include both average _and_ mean? And maybe min/max while we're at it? Seems like that could give a much clearer picture (without even needing a graph!?)