This is interesting market share type data, but I found it disingenious of you to use different time periods for the 4 time series charts - all of which are based on the same underlying survey data and are directly comparable. Why? I'm guessing because you want each chart to best prove your point (linear increases/decreases in market share). Why not put all 4 charts for the same full time period so people can see the ebb and flow of market share?
Deteriorating Market for PCs [View article]