Alexandra Tselios is the co-founder of a leading opinion site in Australia and the US. (worldnomads.com)
Indie Game Reviewer (IGR) is a truly independent opinion site that offers tips on getting into the world of independent game development, exclusive interviews, insider previews, reviews of the most interesting video games. (feedspot.com)
The category contains an interesting mix, with one group - blog / wiki from the Daily Kos community joining e.pol, which I would consider a practitioner's site, and Extreme Mortman, a political opinion site. (epolitics.com)