If you haven’t already stumbled upon the Web site that Sean McManus of the Class of 1999 runs as executive, you need to make a point of finding it. The site is called Big Think, and it bills itself as “a global forum connecting people and ideas.” Big Think encompasses a broad range of topics, and features postings by and video interviews with all kinds of experts, in categories ranging from science and technology to architecture and design. You can join Big Think and get in on the conversations. Look for some of Sean’s own posts on his ideas page, plus find his Facebook, Twitter and LinkedIn addresses on this page. And once you’ve found Big Think and Sean, be sure to check out some of the Ricky Gervais videos. The British comedian is the most popular expert on the site at the moment, and his videos explore everything from religion to Twitter to bullfighting.