I'd like to request that the blog feature be used for instructional posts only, not self-promotion. If you'd like to showcase your work, please do so as a "new discussion" at The Emporium group. An obvious advantage of this is that any publishing professionals scouting for talent will only have to look in one place, instead of seeking out gems from all over the site.
Feel free to interview each other and post reviews. I also encourage you to add photographs wherever possible. Steampunk is a highly visual movement, and the site has been intentionally designed to best set off the photographs you post here.
You can also create a group for any topic or type of membership, post photos of your book covers, add your book trailers to the video files...
There are loads of ways to promote and network here!