+1 - As it seems a good idea. Not sure what would go in it though - do you have any concrete examples of blog ideas?
I already have a (messy) blog, and I am not sure if I could also write a blog on here too. I wonder what the score is regarding duplicating personal blogs on to SE blogs?
An SE 3D print blog could be a good idea for Build Logs, for example, maybe. Or maybe a page that links to other people's superlative build logs, David Crocker's blogs come to mind.
Is the blog (unlike the SE Q&A site) allowed to contain links to cheap items/suppliers? Apparently, reviews are allowed, from Blog Overflow:
Review a product. Reviews don’t fit the Q&A nature of the sites, but these rules don’t apply on the blog! Between a review written by a random person on the internet and a review written by a user on the site who consistently gets a lot of upvotes, which review would you trust more?
This closed question would have fitted into a blog nicely: What Is 3D Printing?
So, yes, I think it would be worth starting one up and seeing how it goes... although I would be a little concerned about the regularity of posts:
Plan a schedule. Given the results of steps #2 and #3, think about a rough idea of a schedule for the blog. Will there be one post a week, posted Mondays? Will there be posts on Tuesdays and posts on Fridays? You don’t need to be pushing out posts daily, but you should post at least once a week.
Pick a posting schedule and stick to it. It is easier to simply keep up from the get go than catch up if you fall behind. Have a couple draft posts stashed away for a rainy day, ready to go that can be published if there is a lull.
Also, who would coordinate it? Are you putting yourself forward?
Have someone holding the reins. This person doesn’t need to be the one writing all the posts, just someone that helps coordinate who is writing what and when it is getting posted.
However, it is a bit of a misfortune that Blog Overflow has a rather unfortunately acronym (as well as sounding like Bog Overflow).