Why Does Facebook Keep Making Under-The-Radar Changes?
Facebook has, in its brief history, made many changes to its terms of service that have upset users. Facebook’s most recent incident involved changing all of its users' default email addresses to @facebook.com, without telling them first (unless one counts the vague announcement Facebook made two months ago about making its site more consistent).
Which begs the question: If Facebook knows users will probably get upset by sudden changes, why do they keep doing this? Whatever the reason, now that Facebook is a publicly traded company, it will have to find new ways of generating revenue to keep shareholders happy, and that means users can expect to see more changes to the service in the future.