I thought it was interesting seeing the cruft of earlier versions in the automatic update cycle (more noticeable in FF than chrome, about 2% total of market sha

I thought it was interesting seeing the cruft of earlier versions in the automatic update cycle (more noticeable in FF than chrome, about 2% total of market share) that doesn't seem to be disappearing. It would be interesting to see how that changes over the next, say, 5 years. To see if it decreases and finds a level that it stays at, or to see if it increases and becomes an issue.