If you combine a few news articles, things get interesting:
"Gartner forecasts that worldwide PC shipments for 2011 will reach 409m units" = 1.1 million per day. It is fair to expect less than 40% of these sales to be for consumers. This is an 18% growth, meaning that in 2010, we can expect PC sales to reach 138 million for consumers, or 379.000 per day. Worldwide.
"Google says 300,000 Android devices activated daily"
My guess is, that in many countries, Android is already selling more than Windows PCs to consumers, and the number of countries where this happens, is increasing. Overall, we can expect smartphones as a category to outdo PC as an entire category, in 2011:
"Smartphone Sales To Beat PC Sales By 2011"
I just bought an HTC Tattoo for the sole purpose of using it as a server (small batch jobs, surveillance, remote control via SMS) in my home, and I wouldn't wonder if we would see more home servers running Android. It is very easy to set up and configure.