Glossary-building KudoZ

What is the "Glossary-building KudoZ questions" box displayed in the home page? Can I customize what I see there?

Users who meet the criteria to answer GBK questions and have a minimum of 5 or 10 open questions available to answer will be presented with a box displaying a randomly selected open question. 

Like many other home page features, users can select not to see this box, or customize its position by clicking the "customize" link on the feature or selecting 
"My" -> "My settings" -> "Site settings"