Some VCs write great blogs. A few that come to mind are Fred Wilson, Chris Dixon and especially, Ben Horowitz. But I'm usually not impressed with the quality of blogging that VCs do as a firm, which is too bad since VCs expend lots of energy courting top entrepreneurs.
First Round has cracked this code with their "Review" series of articles -- well, publication, really --, and has become the best VC-produced content for entrepreneurs I've found. Their content is exactly what both novice and seasoned entrepreneurs often need guidance on, including topics like:
What's interesting is that this isn't even their blog, which is located here and is much more of a traditional not-as-interesting VC blog. First Round has created a separate publication called the First Round Review, with longer form, way better produced content. Think of it as a "VC as a Publisher" model. And it really works. Very impressive, and it's something other companies -- including startups -- can consider doing for their target audiences if they're willing to make the investment required to produce high quality, targeted content.