After two months running the poll, it's time to find out the results of the virtualization product of user's choice. The winner with a significant votes is VirtualBox with 150 votes (70%) out of 213 votes. Even some might argue about Oracle's position as the stakeholder of this product, most people does use VirtualBox as their virtualization product (at least in Slackware).
Second place goes to Qemu with only 2 points ahead of closed-source solution from VMWare. Qemu is also maturing and they have just released Qemu 1.7.0 for those interested.
Time to think about my next poll :)