Here's the question you clicked on:
blues
What is the difference between a R*tree and a R+tree? Particularly interested in differences in their application and use.
Have you checked this http://en.wikipedia.org/wiki/R*_tree#Difference_between_R.2A-trees_and_R-trees ?
Thanks much for the link. It came up at work in discussion of intractability in high dimensional cluster analysis - I don't like the algorithm the group is currently using and am looking for alternatives.