[This review replaces one entitled "Way too flaky"]
After great initial experiences I started to have great trouble with this plugin. Having worked things through with the support desk we eventually identified that my worst problems were resolved by CHECKING the option to clear the object cache when cloning. The symptoms I experienced were with settings, content (pages or media), or activated plugins or themes not copying to the new site when doing a standard clone. Should you find this happening, tick that "Flush object cache after cloning" box near the bottom of the settings and see how you go. I think the UI should explain that this option can be used if cloning behaviour is erratic.
Another problem persists, which is the UI misbehaving when using (up to date) Firefox - behaviour in Chrome is correct. In FF, the form for defining your clone shows a lot of elements that do not apply to the "standard clone" that is selected when the form loads. They will be validated, so you cannot make a standard clone without first selecting another type of operation and reselecting standard, at which point the correct form elements display. If this can be resolved I can happily award five stars, because this plugin saves an awful lot of pain when it behaves correctly!
