Cotchin application is a client for Foursquare which we can use it from the web browser of our Nokia N900. We can see our history , friends, do searches and check-in both Facebook and on Twitter.
One of the most important characteristics is the ability to position by theGeo-Location extension of the N900‘s MicroB browser. To do this you must install the plugin geoGeolocation. The first time we access from our N900 to Cotchin you must allow the Geo-Location plugin.
Go to cotchin.com/m
I find it very useful especially when I need to check in quickly!