Daniel Jalkut explains in Red Sweater Blog – QuickLogin Plugin For WordPress:
… Squarespace users can log in from any page on their blog, just by pressing the escape key.
By default, WordPress requires that you either memorize the admin page URL, or list an ugly “Login” link in the blog’s template. …
My QuickLogin Plugin for WordPress is a drop-in solution that, when activated, gives your WordPress blog the same delicious escape-key behavior that Squarespace offers. Now when I am browsing my own blog and want to log in, I just press the escape key. After I authenticate, I’m automatically returned to the reloaded page I was viewing.
I installed it and it works beautifully. Thanks Daniel. Quick and easy!