Mac Install-Base Shown to Be 16%

Kelly McNeill writes "MacDailyNews has an editorial which summarizes reports from various research groups that analyzed the number of computer users affected by viruses. The conclusion was that 16 percent of all computer users are not affected by viruses because they use Macs. The lack of viruses on a Mac is commonly known, but the interesting thing is the fact that the results finally provide the first set of conclusive numbers which illustrate the Macintosh's install-base. So far only "market-share" statistics are commonly published for the public and do not convey install base. (If for example 2 people are using computers and one replaces his 2x in a 3 year period and the other only does once, market-share dynamics dictate that one demographic has 75% market share while the other has only 25% -- even though install base is still 50/50.)"

Comments

a questionable basis for a percentage

[quinxy]

Hmm, the summary of the article seems to include more facts than the article itself. The summary makes a big point of how TFA's 16% number if found from the virus infection percentage. TFA doesn't say that's where the 16% comes from at all. All the article body says is "In addition, the Software Publishers Association (SPA) estimates that 16 percent of computer users are on Macs." The headline says that 16% of users aren't infected because they use Macs, but it doesn't explain that or justify it. Besides, even if the summary was correct, then this would seem a very poor way to guess at install base. The browser's "user agent" header sent to a general interest site like Google would seem a far better way. Admittedly that would be skewed by Mac users using being "forced" to access Google from Windows in a work environment, but still. That seems like it would have to be more accurate than the approach hinted at in the summary. In searching for google stats on this I found on the Mac Daily News site a discussion which included this very topic when the issue of install base was previously discussed there.