Blogs had blogrolls ofc (some even had web-rings) but for the most parts: a bunch of years ago it was normal for people to link to freshly found blogs from their articles. That kind of flatery was often returned and repeated. The big search engines picked up and send in a good amount of traffic if your article covered the exact topic searched for and at one time you were even allowed to link your blog from the comments you posted on other blogs. While the later doesn't seem like much you would by nature comment on blogs in the areas you are interested in which strongly tends to matches the topic of your own blogs. This process scaled perfectly with how impressive your comment was. I ended up reading countless blogs because their author 1) knew their shit and 2) knew how to write. The [say] 40 k hits could be a huge % of regulars who kept coming back for more. Much more valuable than getting 40 single page view zombies out of google, visitors who may or may not have liked your shit. (Google eventually decided for them that they didn't)
I one time did a rather dull blog with tiny posts describing new blogs I found. (preferably using their own words) It wasn't a serious effort but got over 3 million hits. People didn't stick around but it was seriously cross pollinating readers between similar blogs. The other [proverbial] stay at home mum into baking cakes was just that much more interesting to the one.
I had amazing amounts of fun sending the "motherload" of traffic into 2 article blogs that started days ago. (If you knew me you would laugh how stereotypical that joke is.)
The proverbial mum was like, uhhh okay, I suppose I have to bake more cakes now?
Then when the blog matured other blogs would start to publish (much better) Articles about those awesome cakes. Even interviews happened.
I added 1-5 (usually 3) blog posts per day for a few years. Today there is ONLY ONE out of all of those blogs left that I know of. My blog died naturally, I just got bored with gazing over stale blogs and deleting postings referring to dead ones then deleted the entire thing.