Make your content unique, insightful and rewarding - addictive - so that it turns chance visitors into regular readers. Spend time researching and promoting your work. Don't be one of those bloggers who ignore reader concerns. If someone takes the time to leave a comment or seeks you out via your 'about' page (every blog should have a way readers can contact the author) you can bet that if you tactfully engage with that individual, you will have a reader/friend/follower for life! Take it a step further: What do they like about what I do and how I do it? What do they want done differently? What do they turn to other blogs for?
Younger readers yearn for a dynamic relationship with the writer that feels more like a conversation than a "take it or leave it" one-sided point-of-view. Float and be flexible!