If you have a blog or a forum, you can get publicity and comments by using controversial topics.

You do not even have to take a side on the issue. You can inspire comments and links simply by bringing up a controversial topic.

If you do decide to take a side, I would recommend that you express your opinions in a polite and politically correct way. You do not want to offend your regular users.

A controversial topic is a topic about which people tend to have a lot of strong opinions. These include such topics as abortion, assisted suicide, and most political topics. Of course, it is best if you use a controversial topic related to your niche. For example, often times a topic might be controversial to your target users while it is not of much interest to others. That is ideal.

I think that the best way to end a post about a controversial topic is to ask for opinions from your readers. End your post by posing a few questions about the topic to your readers.