Instructions:Trusted Places is a new recommendations site, where you recommend bars, restaurants, cultural places etc. to your friends.
They appear to have done a deal with Taste London - the scheme familiar to Londoners which gives you 2 for 1 in lots of London restaurants. They are offering free cards (which seem slightly more limited in functionality that those that you pay ££lots for) for all TP users who gain 1000 points. You gain points by reviewing places or referring friends. It doesn't seem too hard, you either refer 20 people (or currently 10, as they have a special offer on..) or write a few reviews of places you've been do.