What makes a blog good? Jason Calcanis sez

Former trade magazine publisher Jason Calcanis is now deep in the blog publishing business. Recently, he shared some great points about what made commercial-grade blogs successful.
According to Jason the selling points of a blog are speed, scoops, stance and sustainability/stability.
Jason also says experience and contacts matter--"Wisdom and experience mean you can blog more frequently and with more speed, stance and scoops then a younger blogger. The irony, of course, is that the older you are the less tech-inclined you might be. The upshot is that people like Peter Rojas, Jen Chung, Elizabeth Spiers and Choire Sicha will have sick talent when they hit 40 — bloggers get better with age."