Agree with the other changes. With this level of analysis, who cares about the platforms with very small market share? If anyone is interested, a separate chart of “other,” broken down into individual platforms, can be created. Good work as usual.

The more I see the one on the left with the rearranged order of categories, the less comfortable I am with it.

I was more interested in the year-to-year trend, so I liked the line panels better, though both have their place. There was no missing 2008 data, by the way: someone confirmed that the spacing of the surveys was early 2006, late 2007, early 2009, so 18 months or so between data sets. I wouldn’t bother with dotted lines in the case of uneven intervals, unless I knew for sure there was missing survey data, or if the gap was substantially wider than the time between other surveys.

I’d guess that the platforms that had no charted data some years actually had around 1%. The data seems to have been cut off arbitrarily at the 9th platform. I would have tried to plot the platforms with the largest combined values, and plotted them in all years. If you don’t know what the small value is you could always apply “N/A” or a similar label. If one of the featured ones went belly up, I’d have used zero, if the overall total was enough for its inclusion. In fact, I would probably have shown only WordPress.org through Expression Engine, and included more into Other. More room for labels, less worrying about the missing values: were they around 1% or did they signify going out of business, because compared to the rest, who cares?