Diversifying my information sources

I'm a little creeped out by people who have no clue what's going on outside their own little circles. Epistemic closure, a sort of intellectual isolationism is something I find repugnant. Google plus makes it easy to get out of that because people share circles of hundreds of others and you can just grab them, sight unseen and find a whole new world. That new world has really upped may daily consumption of cat pictures but also of people who think significantly differently than myself and who I can have a discussion with. I foresee circle building and pruning is going to be a regular activity for me going forward and it doesn't come naturally for me. It is good for me though.