Over the course of the weekend five questions I've answered were bumped to the homepage of Arqade. Before this no questions I've asked or answered have been bumped by Community before (to my knowledge). Four of the five questions only had one answer - the answer I posted, which I also thought was an interesting trend.
Of course, it wasn't exclusively questions and answers posted by me. I did notice quite a few other questions were bumped to the front page as well. To me, it seemed like more bumps than usual.
What is the criteria for a question/answer to be bumped to the front page and why were there so many over the this weekend?