... when we buy things, we should check it that the company supports the gαy agenda, and if it supports it, then don't buy their products. It applies when we choose our operating systems.
Windows is a popular, but proprietary OS, but it's made by Microsoft, which promotes the gαy agenda and Agenda 21. The latter would be the end-of-the-world for many computer geeks (because in one plan, they would restrict our energy usage... and not to mention that earth worship within it). Running to Apple is not a choice, since it supports the gαy agenda, too.
So, what's next? Software piracy is not an option because we cannot curb their traffic in an unjust way, plus as their products are popular and well known (you're still making it popular even with an illegal version), it would attract potential customers, who doesn't know this fact but they want a legal OS.
The solution is: Linux and BSD. They're free and usually, there isn't a company behind them. Every Linux and other free OSs are ethical in that stance (except for OpenSolaris and Oracle Linux, Oracle is on the boycott list, too).
If you don't believe, check the site of HRC. If you're convinced enough, then take action, switch to Linux and spread the word! Pass it to your Windows- and Mac-using friends, family members and others and give them a Linux CD or USB and provide help to them because using Linux can be hard at times. Though I use Debian, I recommend Ubuntu, because it is said to be a friendy distribution. If somebody has to choose an OS due to an upgrade, give your Linux install media and pass the news to him/her. If your boss/ teacher decides to join the campaign, Linux-ify the computers in schools and workplaces... even on servers. Then (after) a time issue the reason for the boycott. The boycott stays until the companies above quit supporting these abominations.
I've heard about that the CL boycotted a beer brand because it sponsored a blasphemious gαy parade. Of course, you can use another free OS instead of Linux. And pray that these companies repent.

I use Slackware Linux because it's not immoral nor proprietary.

Here's a better, working link: http://alien.slackbook.org/blog/