You can blog about Entrecard. There are certainly a lot of people out there doing it of late. For good or ill they have started a small squall in the blogosphere, so why not steal some of their thunder (or add some of your own).
Maybe not an entire blog, or yes maybe an entire blog dedicated to the great widget of dropping.
What is your opinion of the community? What do you think of the system? The widget, the blogs, the staff, or whatever else happens to be on your mind.
It looks as though there will be material for at least the near future, so why not hop on the band wagon and share your views of Entrecard with the rest of us. I am sure that at least someone out there will disagree with what you say so for better or worse you will at least garner some comments for your blog.