A couple of weeks back, I found myself in a discussion with a couple of friends about searching on the Internet and how easy it is to get caught up in a filter bubble and not realize it.  To put not too fine a point on it, because the big search engines (Google, Bing, and so forth) profile users individually and tailor search results to analyses of their search histories (and other personal data they have access to), it's very easy to forget that there are other things out there that you don't know about for the simple reason that …