Allows you to upload customized HTML files to display as a landing page. Ideal for internet marketers promoting multiple products from the same site.
The 302 redirect is used if you want to redirect the desired page directly to the template files. If you don't 302 redirect, the plugin will read the template to a buffer and output it directly to the user.
Rewrites require PHP Dom which is part of libxml. Most servers will have this but some may now.
You can if you use php in your template and load wp-load.