I find it very hard to interpret sarcasm from online writing. It makes me appreciate the writers who have done it so well in books and magazines for so long. Without the inflections of the voice I think most of us have trouble conveying much of the humor and irony we would like to share.
Well put. I, for one, would do well to sharpen my rhetorical skill before attempting to write
sarcasticly or satirically. (I don't intend this as a slight toward Mr. Perry.)
One tact is to write something so outrageous as to convince the reader that it must be sarcastic or satirical, much as Jonathan Swift did in his A Modest Proposal.