From desktop distros to open source virtualization, these four Linux topics are hotter than hot.
Vendors of every ilk have tripped over themselves to announce Linux-related products. We have Linux CD players, firewalls, intrusion-detectors, IP phones and routing software platforms - and the list grows daily. Applications that perform every task imaginable (and some tasks you don't want to imagine) have gushed from the open source community.
http://www.networkworld.com/buzz/2006/111306-linux.html