You know, Yelp should cut off its relationship with Opentable and just jump into this business itself and charge either no fee or a nominal fee to restaurants (basic vs. pro).
This would solve a big problem for Yelp; if Yelp could save restaurants from the crushing cost of reservations, restaurants would be more inclined to forgive Yelp for allowing us "bored, jobless layabouts" to trash them in a public forum (http://blogs.westword.com/cafesociety/2010/11/people_hate_us...).