Brian and I have been talking about ‘event’ driven blogs and how businesses can use them in conjunction with traditional marketing/pr promotions.  One great example of an event driven blog is the GM Smallblock blog. 

GM started the blog to talk about the 50th anniversary of the Corvette’s small-block engine.  Now that the anniversary is over, so too is the blog.  According to Debbie Weil GM did consider turning it into a powertrain blog, but one astute reader suggested, "Keep to one topic… don’t try to take on too much in one blog."