I have used this simple plugin.
Within less than 10 minutes, I can make it run to my preference.
Thanks a lot for this great job.

I hope that the developer will continue the development to J1.5 native and even to J1.6.
Moreover, I think that this plugin should be a standard in CB.

Although I am not the fan of IE, but many people are still using IE, hence a website should be able to be accessed by IE.
I have tried to use IE 6.0 to access the demo page and it simply says "IE cannot open the internet site"
The plugin seems to implement good cache, but the fact, that IE is unable to access it, is very disappointing.

I find that the tool is quite useful
You can get many recommendation on how to improve the security or solve the problem in your Joomla installation.

With the followings features, I can say that this extension delivers a satisfactory PMS:
* Option to notify the user about new PM
* Option to see list of user
* Option to pm person from his/her CB profile
* and may others

Further improvement might be done if:
* The message (to be sent) box is wider
* Shorter period to send the "forget me not" message e.g 7 days or even everyday
* captcha

This component is such a good one.
I am really helped.
However, it lacks some important features as follows:
* No possibility to export the statistic data so that it can be processed offline
* MySQL database tends to grow pretty fast even with low traffic web site (50-100 visitors/day)
* As pointed by carloq, the last part of path (subdirectory) is doubled; Disturbing the statistic calculation but annoying
* No automatic feature to disable recording statistic from web owner computer, hence the web owner cannot visit his/her own web site without adding number of recorded visitor.
I had to make the hack myself, but I love to have the feature built into the component.