baronen

Gowalla is a “Here am i” service that allows you to check in to various places so your friends can see 
what you are up to.
WP-Walla allows you to show your gowalla checkin’s on your wordpress blog. The plugin is design to 
work as a sidebar widget or by manually put a code snipper in your template.
WP-Walla caches the data in a file.
You can easily change plugin settings under the WP-Walla option i the settings menu.
More info: 
<a href="http://www.baronen.org/wpwalla/" rel="nofollow ugc">Official plugin site</a>
Twitter: 
Follow me on Twitter to keep up with the latest updates <a href="http://twitter.com/baronofsweden/" rel="nofollow ugc">BaronOfSweden</a>
Contact: Do you have any questions or suggestions feel free to contact me at baronen@baronen.org

WP-Walla

WP-Walla is an plugin that allows you to get your checkins from Gowalla and present in sidebar as a widget.

perkovich

The plugin displays activity in a <a href="http://gowalla.com" rel="nofollow ugc">Gowalla</a> Spot in a WordPress Post or Page. It uses the <a href="http://api.gowalla.com/api/explorer" rel="nofollow ugc">Gowalla API</a> and requires the unique Spot ID saved in a custom field in WordPress.
Example: http://www.surdegskartan.se/mellbybagaren/
The last five activities are displayed (API limit).

Gowalla Spotter

Displays latest activity in a Gowalla Spot as a list in a Wordpress Post or Page.

WP-Walla vs Gowalla Spotter