Mix text with images and embeds
MP4 or YouTube embed, Vimeo, Dailymotion, etc.
Facebook post, Twitter status, etc.
MP3 or SoundCloud embed, MixCloud, etc.
Everyone can submit new list items and vote up for the best submission
One or multiple questions about a subject or person
A poll where each question has two competing answers
Everyone can vote up for the best list item
External site's link