>Massively bigger network than the blog-o-sphere provides more value.
I question the value. Yes, there's discovery but nothing is keeping anyone from clicking through a link from a short summary. And, if people don't? Personally I'm OK with that. No one is paying me for eyeballs. Way too many people are obsessed with pageviews even if they don't get compensated for them.
Your new content appears in feeds in seconds.
The small content size constraints allow readers to follow more people, making the network more connected.