Google Maps Geo Mashup Wordpress Plugin

I have just installed the Geo Mashup WordPress plugin which allowed me to create a scrollable Google Map mashup (if only one map pin shows up you can use the controls at the left to zoom out or scroll around), with a pin for each post that has a set of latitude and longitude coordinates. Clicking on a pin pops up a summary and link to the post.

The coordinate sets are added to posts using the Geo Plugin.

I am hoping there is a way to filter coordinates that get displayed. This way I can create a mashup that only displays geocaches, and then have another that only displays something else. I don’t see that feature now - but hoping, even if I need to create some kind of map category that it can filter on.