Reading one blog article that mentions another blog article that then mentions another blog article is the way that I have found interesting content over the years. I have a few hundred feeds in my RSS reader and that helps too. But I am sure that I am missing out on a lot more interesting content.
Right now discovery is one of the weakest areas of the IndieWeb. I think that many people POSSE their content for this reason. I get more readers via Facebook and Twitter than I do via organic Google searches or links from other bloggers. I recently stopped POSSE my posts and ... the traffic has fallen off significantly.