Sara, I see that your heart is in the right place… but by leaving reviews for about 10 restaurants all over North America on the same day form the same IP address you may be inadvertently making it look like the restaurants have used a “pay-for-review” service… and that could cause a backlash against the restaurants you are trying to help.
Check out this recent post from Yelp about this: http://officialblog.yelp.com/2012/10/co … -know.html
Love Yelp or Hate them… no restaurant would want that banner slapped across their page for 90 days.