Devin Reams

If you reference venues on <a href="http://foursquare.com/" rel="nofollow ugc">foursquare</a> you may want to include the Publisher <a href="https://foursquare.com/buttons/savetofoursquare" rel="nofollow ugc">“Save to foursquare” button</a> inline within your WordPress posts.
This plugin is a simple shortcode that accepts two parameters:
<ul>
<li>uid = foursquare user ID (numeric) to appear as ‘referred’ by’ on foursquare once saved to a user’s list</li>
<li>vid = the venue’s ID (hash at the end of a venue URL)</li>
</ul>
This was built for my own purposes but am happy to accept pull requests <a href="https://github.com/devinreams/wp-save-to-foursquare-shortcode" rel="nofollow ugc">on GitHub</a> for any improvements to make this more useful to the community: https://github.com/devinreams/wp-save-to-foursquare-shortcode

Save to foursquare Shortcode

Add the "Save to foursquare" button to posts with a simple WordPress Shortcode.

freedimensional

Foursquare is rising in popularity, and will continue to grow. This plugin makes it easy to share your last check-in location without needing to worry about giving away personal info, and you don’t need to be an expert in mapping APIs!
The plugin places a Google map in a widget area and lets users enter their preferences over what they show, be it just the map, or the name of the place too, or the comment they left while there. Simple, effective, and sociable.
<h4>Features:</h4>
<ul>
<li>Offers an easy way to share your last check-in location with your blog’s readers.</li>
<li>Built on the Foursquare and Google Maps APIs, so expect blistering fast speeds.</li>
<li>Intuitive interface for editing options, with plenty more power under the hood.</li>
<li>Independent handling across multiple widget instances, using WordPress 2.8’s widget_class coolness.</li>
</ul>

Foursquare Map

Adds a map of your last Foursquare check-in location to a widget area, and makes it easy to share with your readers without giving away too much info.

Save to foursquare Shortcode vs Foursquare Map