Well, scribd is an online community specifically for exchanging original writings. I believe they deal exclusively in pdfs.
Likewise, torrents can be made of a collection of pdfs and exchanged among a large network.
In both cases, people can download rather large chunks of texts and read them or print them out as they see fit.
(A big reason why I think blogging is so difficult a platform for authors to gain exposure on is because most authors write as if they have a captive audience when in fact most blog viewers are just passing through).
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