Yelp now says it has 29 million monthly uniques and 9 million reviews. A majority of users (54%) are over 35; however the largest single group is 18-34.
Yelp is one of the few sites now only selling its own traffic. The major search engines also do but Citysearch and yellow pages publishers all sell a network.
Do you think this approach is sustainable for Yelp or do you believe the company will need to adopt a similar “network” approach for advertisers?