St. Louis — When it comes to review sites, consumers trust larger, more established ratings sites such as TripAdvisor and Zagat than smaller, newer sites, according to a new study from Maritz Research. In the automotive category, Edmunds was the only site to crack the Top 5.

The 2013 Online Customer Review Study, which examined 13 high-profile ratings sites, found that consumers aren’t all that trusting of feedback shared online. The Top 5 sites claiming the highest trust levels included:

1. TripAdvisor

2. Zagat

3. OpenTable

4. Edmunds.com

5. Yelp

The study found that one in four people believe the information available on ratings sites is unfair. And while the older, highly visited sites were generally perceived as more trustworthy, more than a third of visitors were still cautious of the information posted on these sites.

“Many people we surveyed expressed concern over reviews on customer ratings sites being biased or even fake,” said David Ensing, vice president of Voice of the Customer Integration for Maritz Research. “Many site visitors tend to believe that ratings sites select which reviews are posted, that employees post fake positive reviews for the companies they work for and that raters only share their positive or negative experiences instead of sharing a balanced opinion.”

For those who felt ratings sites were generally fair, many reported they still have to separate trustworthy reviews from non-trustworthy ones based on their own intuition. Specific survey respondents noted that they:

• Can usually tell when a review is fake if it is overly positive.

• Try to determine if the review is legit or if the writer is out for revenge.”

• Read between the lines to see what the reviewer is really saying and discount reviews that feel unfair.”

• Try to read a range of reviews. If there are not enough reviews, [they] don’t take it seriously.”

The research indicates that there may be a credibility crisis on the horizon for online review sites, said Ensing. If the lack of confidence in customer reviews continues, these sites could become obsolete. To address trust issues, companies and ratings sites should consider more secure and credible ways to provide customers with reviews that have been verified and aren’t skewed.”

The Maritz Research 2013 Online Customer Review Study surveyed 3,404 people about the use of 13 dedicated customer review and ratings sites, including TripAdvisor, Zagat, OpenTable, Edmunds.com, Yelp, Urbanspoon, Google+, Hotels.com, Room Key, Foursquare, Priceline.com, Citysearch, and DealerRater. The online panel study was conducted from April 3 to April 24, 2013.