embedit.in is an incredibly easy tool to use that allows you to embed any file or URL directly in your own website or blog. I have included an example below of an embedded website. The website is the Wiki I maintain and you will notice that while you can scroll up and down the page you can't click on any of the links shown on the page.
Here is an example of an embedded file. This is a syllabus from one of my educational technology courses.
As you can see, you are able to zoom in and out, view the file or website in full screen mode and also print either one. All users will also be able to download any file you embed and there is currently no way to make any of your embedded files private or restricted to specific users.
embedit.in is free and you don't even need to create an account. You are asked to log in with a third party account such as Google, AOL, Yahoo or an Open ID account the very first time you use the service. You can retrieve your past "embeds" by clicking on the My Embeds option, which makes it easy to retrieve code from previous sessions. I see this tool being more useful for sharing files than websites. I think it would be a nice way to represent files you want to share visually rather then just providing links to these files and relying on people to download them.