Of late a friend of ours has been ranting about all of the bloggers he serves. To give him a voice, I've summarized his angst.
Top three complaints from your server about you, the restaurant blogger.
Note taking: You are there to eat and enjoy. Notes don't help you eat. They don't help you enjoy. They make you look like a weenie. Stop acting like a weenie, eat something. If you can remember what you ate, write about it.
Mentioning other online reviews: Your server is there to deliver food to you, not hear about what you read online. Eating out is entertainment and a little hobby for you, for your server it's a hectic job.
Taking names so you can skewer people on the web: Not fair. Not cool. Not a service to others.