Trusted Opinion, a social recommendation network for restaurants, bars, cafes, and movies, announced today that it has hit a new milestone of 1.5 million reviews worldwide from its 1 million registered members.

The site weights reviews from your social circle higher than those from strangers. And like any social network worth its salt, it lets you connect with others who share your tastes. The site also aggregates reviews from other sources like Citysearch, TripAdvisor, and MenuPages. If you don’t want to rebuild your social presence on the site from scratch, Trusted Opinion also offers integration with other social networks like Facebook, MySpace, and Orkut.

Though it’s much smaller than other recommendation sites like Yelp, Trusted Opinion serves a wider international market than many of its competitors. The site supports 43 languages and 100 countries across North America, South America, Europe, Australia and Asia. In comparison, Yelp only supports a few countries outside of the U.S. — Canada, the United Kingdom, Ireland, and France.

When last we looked at the site several years ago, it appeared no different than your typical social network. It’s added considerable polish since then, which probably explains why it’s caught on with international audiences. It’s also one of the few options for countries that aren’t supported by bigger recommendation sites like Yelp. Unfortunately, it doesn’t fair well against Yelp in the U.S. — several searches around my Brooklyn neighborhood (among other locations) yielded business results, but few useful reviews.

To date, the Palo Alto, Calif.-based company has raised $4.7 million in funding.