Blog as a Third Space?

I think that our Blog acts as a third place because it can be accessed pretty much anywhere by anyone here in our blog. If you have access to the internet you have access to the Blog. However, some people don't really enjoy blogging, so why would they blog if they didn't have to? Also, it is available to everyone in our discussion, but it isn't available to people outside of the discussion. A person needs an invite to get access to this blog so it really isn't a third space for everyone everywhere. If you are stuck out in the rural areas, with no means of internet access, then the blog isn't available to you and thus isn't a third space. Really I don't find a blog to be a good third space at all. It's available, yes, and you can access it pretty much anywhere, yes, but it does have its limitations.