I want to set up multiple WP installs in a few subdirectories. For example, one WP install would live at mydomain.com/blog. Another WP install might live at mydomain.com/project1 and another might live at mydomain.com/project2.
I'd like to enable single sign on so that I only have to issue one username and password for a user across these multiple WP installs. How might I accomplish this?
FYI...I've considered enabling MultiSite, but I decided against it for the following reason;
While permalinks will continue to work, the main blog (i.e. the first one created) will have an extra entry of blog, making your URLs appear like domain.com/blog/YYYY/MM/POSTNAME.
This is by design, in order to prevent collisions with SubFolder installs. Currently there is no easy way to change it, as doing so prevents WordPress from auto-detecting collisions between your main site and any subsites. This will be addressed, and customizable, in a future version of WordPress.
Thanks in advance for any assistance!