For the idea I give 5 stars. But I have problem installing it. I have to emphasize that I am advanced user of Joomla and programmer, so I am not unfamiliar with different problems.
So I have submited ticket more then month ago and ... nothing. So I have to give bad rating.

I really liked what this extension do and way it does it, but I have encountered few problems using it. First one was installation problem (after installation, upon going on component link browser kept reporting some kind of a loop error). I have solved it by manually creating tables and folders for storing images. None were created by installer. Then I ran into image problem some have. I haven't solved it yet completely, but I have realised that SEF cousing it. If I turn off SEF, everything works.

I have to say, that I have installed same component on another site, for testing purpouses, and none of those problems occured, and site is hosted with the same company as first one, so I am not sure what might be causing those errors.

This is very good extension. However, although I can say I am an "advanced Joomla user", I needed some time setting it up. Better manual and none of those bad reviews would exist.