My current least favourite design decision is the import/export system. It spits out posts, links etc in an XML file.

So far so good, except that upon importing, it creates an entire tree any memory before doing in processing. I complained to Matt about this being a less-than-ideal design. His response was, essentially, "it works for me".

Of course it works for him. He has dedicated servers with gigabytes of RAM. I do not. What I do have blogs with dozens of authors, thousands of posts and hundreds of thousands of comments. Consolidating them on a single installation of Wordpress has cost me days and days.