Has anybody used GeoIQ with Google Maps to visualize your map with heatmaps?

I've been trying to add GeoIQ API into my site, by following doc.geocommons.com (you might need to access via Google cache) and their live example of maps on WordPress posts looking at both documentation and blog source, I still can't make things work.

I've sent my question to support, but I'm wondering if anyone here have used this API before.