Rated 3 out of 5 stars

Does anyone know if Clusters is still being supported/maintained by the developer please? e.g. Check these sites:

http://news.addonx.com/2010/09/addonx-announces-enhancement-of-clusters/

http://www.clusterurl.com

A version for FF4? A response (positive or negative) from the developers would be appreciated.. Thanks for any help.