Visited States

I have been to 38 of 74% of the states in this country, but until now I didn't realize how contiguous the missing states were. It seems like I can get them all with a long drive. One might ask, "What constitutes visiting a state?"
Airport stop - no,
Spending a night - yes,
Meeting at least one person from there - yes,
Other suggestions -??

create your own visited states map