Nothing bad will happen if you click on it. What I usually click when I use the "Options" menu is click "Track this topic," which lets you follow that thread's replies when you go to My Controls > View Topics.

Thanks

You're welcome.

The other options are pretty straightforward. "Email this topic" lets you email the thread to a contact, "Print this topic" lets you print it, and "Download this topic" lets you save it to your computer. Under "Display Modes," you have different ways of displaying the topic. I've never actually clicked any of them, but if you do by accident, just click "Standard."