ByronM - 4:27 pm on May 18, 2011 (gmt 0)
Isn't it much easier and cheaper to create happy customers who would be excited to leave a great review on yelp than to "sue off" some bad ones legitimate or not?
If you're really focused on customers, just ask politely for them to review the service. I recently had auto work done at a no-name shop and i left a glowing review on yelp because the service and price was astounding and he asked nicely for me to review the them after he found out i used bing local which in turn pulled in the yelp review.
TLDR, if you have to sue to look good, you're doing it all wrong :)