In the last days I encountered at least two questions (that I still recall) in which people were asking for/providing links to complete ebooks.
While I know that some authors choose to publish their book freely available online, I am pretty sure that this is not the case here.
Is there a policy established regarding those posts?
Points in case:
book recommendation on functional analysis (see the comment to one of the answers),
Have a question about $L^p$ multiplier. (again, see the comments).