This reminds me of when the .mobi domain was described as a threat to the future of the web (http://www.w3.org/DesignIssues/TLD http://www.w3.org/DesignIssues/T

This reminds me of when the .mobi domain was described as a threat to the future of the web (http://www.w3.org/DesignIssues/TLD http://www.w3.org/DesignIssues/TLD). While Facebook is much more of a thing than .mobi I'm pretty sure the end result will be the same, Facebook will come and go, the web will abide.