Today Yelp launched their implementation of Facebook Connect to enable users to share reviews with their friends on Facebook. After you post your review on Yelp, you are prompted to post it to your feed. That’s about the extent of the service but it’s definitely another large site to integrate with Connect. Aardvark, Etsy, oDesk, The Washington Post, and many more have also implemented Connect in recent weeks.

Facebook has invested heavily in building out Connect, attempting to get as many sites to implement it as possible. While millions of users have taken advantage of Connect, the company isn’t giving exact numbers. The only numbers that are accessible are currently through Compete.com which state that over 64.9 million people have viewed it. Unfortunately that doesn’t really mean outside of the number of requests for the Facebook Connect JavaScript file.

In other words, any site that has implemented Facebook Connect will request a specific file from Facebook everytime a page is loaded. It’s an effective measure of the combined reach of Facebook Connect enabled sites but it doesn’t count how many people have actually linked their account with sites around the web. We’ve been tracking the number of people connecting via various sites but it’s only a sample so unfortunately I can’t provide an accurate number in this article.

We’ll be providing more Facebook Connect updates over the coming weeks as more sites begin to roll out their implementation of the service.