For those into cuisine and nightlife, especially in San Francisco and Los Angeles, I've stumbled upon an interesting and very sexy review site called eVelvetRope.com and it's sister site, EVRMag.com. It's a review and recommendations site that encourages members to share their opinions. While there are very well established review sites out there (i.e. Yelp and CitySearch) this one is different in that not anyone can be a reviewer. Membership is attained primarily by invitation, and there are protections in place to prevent the invitation process from being abused. Without an invitation, it is still possible to apply for membership.
From what I have seen, members seem to be the well-heeled, young-ish entrepreneurial set–from restaurateurs and club owners to investment bankers. When I joined the community, their featured member interviewee was a 25-year old who had sold his company to Yahoo! for 300 Million. Apparently, their aim is to filter the onslaught of web-based information in order to extract the most relevant, useful and trusted . Think 'aSmallWorld meets Yelp', however, unlike aSW, their membership policy is not designed to be elitist. They simply want to protect the integrity of the community and the content. You won't find profiles with cartoon pictures or pets in this network.
Besides the user generated content (reviews, events, etc.) eVelvetRope has a team of in-house writers contributing interesting editorial content on everything from home cooking to fashion. I think this is a great concept, so I have decided to contribute some content myself, including my video series on various luxury lifestyle topics.
I would recommend checking out EVRMag.com before eVelvetRope.com, as it does not require membership. This is a relatively new venture, but definitely one to watch out for. There is simply nothing else like it out there.