I'm not sure Instapaper is entirely in the clear either, but I think the printing and shipping actually do make a difference. With digital copies, you have the

I'm not sure Instapaper is entirely in the clear either, but I think the printing and shipping actually do make a difference. With digital copies, you have the benefit of the DMCA (that is, copyright holders have to issue you a takedown notice for user-generated content before you can be held liable, assuming you comply with all of the other DMCA requirements). However, there is no DMCA for print.