The Atlantic's Quartz publication has unveiled a new feature that allows readers to annotate any part of an article.
It's just a site that lists all of the blogs that cover the wonderful iOS development community. It was built, and is maintained by Dave Verwer who is also the author of iOS Dev Weekly.
This GitHub repo has an interesting UI/display for creating a full page blogroll of sorts. It has means for following individual sources as well as subscribing to OPML files.