Starting a Blogging Community

I quite enjoy blogging and I also like communities such as Biznik, but I haven't been able to find a good blogging community that really emits the community feel and where people can come together to discuss blog topics, growing your blog, any technical issues. So, I decided to create my own site. Eventually the site will have much more than a forum, but you need to start somewhere. Right now the membership is invite only and I would like to invite biznik members to come be part of my blog forum. I am looking for advice and critiques. I really want to make this a special place so please do drop by!