I use the Internet extensively to research learning design – both content and process. Commonly I come across pages that contain a lot of information and that I would like to download and/or print. But these pages are HTML rather than PDFs. Some posters recognise the issue and include a button (at the top of the post) that allows one to download a printer friendly version of the post. But many do not and force me to convert to a PDF file that I can save – except that this often includes a lot of irrelevant garbage.
So, if you are going to post useful information to the web, I suggest that you also have a separate PDF file that can be downloaded and printed.