Great extension. I used JV-LinkExchanger on my old Joomla 1.0.x site, and was dissapointed that they didn't have a version compatible with 1.5 until now. The new version installs easily, configuration is a snap, and the support is fantastic. I had a small question about the way the site link thumbnails displayed, and it was answered very quickly.

I have used this extension on several sites. It is easy to install, configure, and support. It is the best comment extension I have tried. The developers are quick to respond to support questions, and are very helpful in troubleshooting any issues that you may encounter. A+