Laura, that comment reminds me of children complaining that 'she's breathing my airspace' - or 'she hit me first' which makes it equally ok to hit back but harder.
Truthfully speaking, you have a very difficult time accepting criticism of any type, be it constructive or in-your-face.
In the full scheme of things though, I haven't viewed you truly debating an issue. Rather, you hit then run then twist words and change your tune to gain favor. That is not the way to win friends and influence people.
I have offered titles/author of books I have in my library. I hold those particular books dear and tell many people about them. If you choose to take it as an offense, that's your business. But please know...you're wrong on that.