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.

Janyk Steenbeek

With this plugin, you can add an widget to your sidebar which is showing you your latest Foursquare check-ins. Plugin is Dutch!

LatestCheckins

Always your latest Foursquare checkins in your sidebar!

WP-Foursquare Todo Adder vs LatestCheckins