mitchellhislop

This plugin ties into Foursquare’s remote tip/todo functions, which in turn allow a website operator to 
easily embed the buttons. It was developed by <a href="http://mitchellhislop.com" rel="nofollow ugc">Mitchell Hislop</a> of <a href="http://smcpros.com" rel="nofollow ugc">SMCpros</a>

WP-Foursquare Todo Adder

This plugin allows a publisher to easily add a foursquare todo button to a post.

Florian Beer

Displays venue names and icons of the latest Foursquare checkins. 
Requires Foursquare Username and Password filled out in the widget’s settings.

Foursquare Latest Checkins

Displays the users latest Foursquare checkins including venue icons as a sidebar widget.

WP-Foursquare Todo Adder vs Foursquare Latest Checkins