Last week the blog and entire website was updated with a new look. There were also a few changes made to the overall site format and navigation. The biggest change is that the blog is now at landarchbim.com/blog.
There will probably be several more updates as the design and layout are finalized.
For now, the old blog menu is not available. I am still trying to figure out how exactly it should be integrated. But in the meantime, you can still use the search bar to find all previous posts.