(1) "The Series" - Paul Steele's Twitter Singups, Tony Hastings' The Top 10 Blog Interview, Jessica Northey's e-View, Lori McNee's PowerArtists and Chris Burget's PowerHunters are all brilliant examples. Each picked a topic, developed it, and attracted, engaged and maintained a loyal readership that looks forward to each new post. Indeed, creating a series can be a powerful way to build a strong brand.
(2) "Collaboration" - Though you don't see it a lot, joining forces with another blogger is a great way to increase the reach of your post. Mirijam Rosenast and Bariq Rifki write posts on their Xcaped Cat blog. It's a great site because both writers deal with a wide-ranging degree of topics. It's always fascinating to see how their writing styles and life experiences inform their work. In fact, you see lots of writers on well-known blogs teaming up more as well.
I am proud to say that a lot of my work incorporates these areas. My huffingtonpost, twitterpowerhouses series has profiled men and women from all over the world, and I make a strong effort to bring on a co-writer who will enhance the overall presentation. But everyone is different. Lots of bloggers have never launched a series and have no interest in collaborating on anything. And they don't have to. You create your own rules.
But there is no denying the power of these two trends. We'll likely see more - not less - of this in the coming years. And blogging will be that much greater because of it.