An addition to your RSS readers: the Washington Post’s new All Opinions Are Local site, featuring original and aggregated opinion-based content from seven prominent area bloggers, including yours truly. Several other writers involved you’re also likely familiar with include David Alpert from Greater Greater Washington, Dan Malouff of Beyond DC, and Topher Mathews from Georgetown Metropolitan. Rounding out the group are a few bloggers whose work I’m anxious to get to know better: Kenny…