The SimpleHTTP application serves a default.htm .gif .jpg .swf or .js file from it's \wwwroot directory. Included are a blank page, transparent 1x1 pixel gif, white 1x1 pixel jpg, and 1x1 pixel flash file.

You can modify these to be whatever you like, just so long as filename remains default. Speeds up surfing by answering the request for blocked content. Useful with HOSTS files files or DNS Redirector software.