I've come across a host of blogs via individuals profiles on this site. Perhaps to get the ball rolling individuals who participate in the community would be willing to "re-publish" old blog posts to stimulate discussion on particular topics. If people are interested in disseminating their work I would think it would be a good venue to get more exposure.
Here are a list of a few blogs I've started to follow since participating on this site (note this is not exhaustive, simply what I've found through randomly looking at peoples profiles, and blogs that are not too mathematically challenging for me to follow):
Looking over the list I see many of the blogs have a large focus on various programming topics (which is of obvious interest to the community). But many have blogs posts relating to strictly statistical questions as well, and I think either would be perfectly reasonable within the scope of the site's blog. If people want more exposure re-hashing old posts for people who contribute to the site seems fair to me. Of course this is dependent on people volunteering their work for the community, but I'm just listing this as a potential option for generating content.
Also as a suggestion I think we could identify some particularly good questions and answers on the site, and then have the individuals expand those into full blog posts. Maybe not so much to add content to already excellent answers, but to simply garner more exposure for those particularly enlightening exchanges. Here are a few of my favorites;
If we identify recurring questions we could perhaps make a blog post to attempt to expand and identify key features of those recurring questions as well.