Good article.
In my case, the odometer in my 88 Silverado quit in about the year 2000, reading about 243,000 miles.
When I got it in 2009, I was told that the estimated mileage had to be at least 350k. I suppose that's likely, the previous owner had a 70 mile round trip commute.
It's never been my main driver, but I've road tripped it and driven it work pretty regularly. I figure I've driven it about another 50,000 since. I've thought about repairing it, but it's never been a priority. Seems kind of pointless to repair it now, except for the fact that I can't track fuel usage. I normally calculate my gas mileage every fill up.