I think to be an effective the post title, it has to be true - not just shocking for shock effect. And it shouldn't be personal. It's risky when it looks like an attack on a person or company. A 'You suck..." lead is going to be difficult in overcoming to win the reader over to your point of view.
In this case, the title is an actual quote from the subject of the interview. So I shouldn't take much heat for the hackles that are surely to be raised - being just the messenger and all.
I think your piece on tag lines is a good one. You could cool it a bit by saying: "Why Most Tag Lines Suck." Taking the reader out of the line of fire.
I'm a big believer in company tag lines telling the company's story from the customer's perspective.
My all time favorite is the old Burger King: "Your Way - Right Away."
I'm pretty fond of Sanda's "Storytellers for the Information Age" too.
Bill, if the title of that blog post is preventing you from sharing it proudly...I don't see too much harm in changing the title. Google isn't going to black-list you or anything crazy like that.
This blog post title I used recently may make you feel better (wink).
On a tangentially related note, I did two blog posts in a day, and they are forever linked together via the same URL. One was controversial, the other not...so guess which one I end up recommending to folks.
"You might skip the 1st part, it's the second bit that you might be interested in."
Just in case you are not making enough mistakes, please feel free to learn from mine. I've got plenty to share.