Due to a certain observed need
and some spare time, I implemented the feature of embedding PDFs in your forum post.
There are certain undisclosed rules to mitigate the possibility of random people embedding malicious PDFs. The default PDF reader of the browser is used. In the case that there is no default PDF reader associated with the browser, which is often the case on phones and tablets, a download of the file is initiated. I'll work no this later, to prevent such 'unexpected' downloads on potentially bandwidth limited devices.
The PDF is (crudely) validated, cached and served from the JGO server, to ensure the content is not replaced with malicious bits and bytes after the one time validation has occured.
By embedding a PDF file in a post, you acknowledge that duplication and redistribution occurs and grant JGO full rights to serve the content to any third party. It is forbidden to embed content that has a license which does not grant these rights to JGO.
The UBB syntax for embedding a PDF file is as follows:
The content box is 95% of the available width in the post and 950px long.
(click this page to load the PDF)
In other news: support for embedded applets has been terminated.