Which Location-Based App is more fun?

Brands, organizations and companies have been tapping into the social networking sphere with rigor searching for the next best way to tap into their audience. Now you see the updates on Facebook and Twitter of Foursquare and Gowalla. Do we care that you checked into the movie theater or bathroom at Applebees? Now the latest and greatest to hit the app world today is Shopkick which offers real time discounts and gift cards to shoppers who check-in to retail outlets llike Best Buy, Macy's, American Eagel Outftters, and Simon Property Group which owns most of the malls in the country. Read the New York Times review on Shopkick.

Here's a good breakdown of Foursquare vs. Gowalla on Mashable.

On a positive side for the do-gooders, there is causeworld - when you check into a store you receive "karmas" which you collect and donate to a charity of your choice.

Here is a list of all location-based social networking apps i can find; any others to add? Opinions? (thanks CSherwood for helping me research gather!)

• Foursqaure
• Gowalla
• Shopkick
• Causeworld
• Loopt
• Brightkite
• Superglued
• Sitby.us
• Tabbedout
• Plerts
• Mytown
• Dopplr
• Google Buzz