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Checked In Book By Craig Agranoff and Herb Tabin
We are pleased to launch Checked-In the first book dealing with Gowalla and Foursquare!

We are pleased to launch Checked-In the first book dealing with Gowalla and Foursquare!

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Testimonials
testimonial
I have been waiting to learn how to use location apps. This book has helped me and my business. Thanks guys! ...more
Conrad Tucker
 
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