Here's a fun speculative question from Martino in Trento, Italy. They ask, “Which search media does return the more reliable information: Google or Twitter?”
Now, don't go hating on Twitter or trying to make people bust heads. Twitter has many many great uses. It's great for breaking real-time sort of news, it's fantastic for asking your friends. And Google, on the other hand, we try to return really reliable, really reputable information.
So if you're sorting by date, Twitter is fantastic. If you want an answer to a question that's been around for a while, Google's great for that. And try both for different situations. If you don't have as many friends, then you might not be able to get the questions that you want answered answered on Twitter.
So they're different. They're good for different things. I would say, use whatever works best for you.