The social location network, Foursquare, announced that besides surpassing 10 million members, they now have 500,000 businesses using their Check-in offers. Whilst Foursquare is still niche  (compare 1o million members with Facebook’s 750 million), they are combating stiff competition from Facebook’s Places/Deals by creating an excellent, free, brand platform. One interesting example cited in their blog is from Radisson Hotels in the UK who are using the Check-In to offer their customers an additional 2 hours before check-out. It shows that brand offers can be much more than discounts for free cups of coffee.