Multisite use and paths

It’s there to prevent collisions. Example! 🙂

You have a page named ‘site1’ and a sub-site named ‘site1’. Both URLs would be http://domain.com/site1 – Which one gets served? By putting ‘blog’ in there, you prevent that collision.

There are a couple plugins that may help you:
http://www.thinkinginwordpress.com/2009/09/remove-blog-slug-from-the-default-blog-of-wpmu-subdirectory-installation/ (though it doesn’t seem to work in wp 3)

http://wpmututorials.com/remove-blog/ (costs $, but its made by a very reliable source)

Also consider reading http://ottopress.com/2010/category-in-permalinks-considered-harmful/ to understand more about Permalinks 🙂

(IMO, I think we should be able to CHANGE /blog/ to whatever we want, like we can with BuddyPress slugs. I’ve heard that this is being ‘improved’ in 3.1! No details though.)