ronw: Google is now enforcing new requirements on websites that do not comply with their requirements to be viewable on mobile phones as well as computer browsers.
This is going to make a major impact on many websites that will not meet these new requirements. The penalty for non compliance is that Google will push your site down the rankings in searches.
The alternative for many is a complete re-write often having to duplicate pages one for mobiles and one for desktop.
I am curious if this will affect many people who do their own websites.
This has exploded out of proportion and mainly thanks to SEO companies that profit of doing poor jobs all around. Basically they sent ut press releases claiming companies would disappear from Google SRP (Search Results Pages), companies would lose millions, etc.
Reality is that this only affect mobile searches, and rightly so.
First if your website does not provide mobile-friendly content and other one does then Google will show the one more likely to be readable on a mobile device. It doesn't change how your website shows up on desktop searches.
Second this changes affects domains on a page level, not website level.
Obviously there are two things in play here: e-commerce companies that rely on Google searches to have their products in front of an audience (sales oriented) and those who want their content in front of an audience (advertising oriented).
Different companies will have to work in different ways. There's so much SEO spammers can do before they act like spammers (dropping URLs left and right in forums and unrelated blog comments).