Another take on Facebook Questions; also see the Facebook blog post on the topic
"The core of search is a question," said Danny Sullivan, editor-in-chief of the blog Search Engine Land.
"For thousands of years we asked questions of people that we trusted.
"Then around 15 years ago we underwent an incredible revolution with the arrival of search engines."
Mr Sullivan said Questions was a return to this age of more personalised search.
"You can now put questions out there in a way we used to do before everyone was online," he said.