Comments example

This is an example of image post format. You should really set post featured image for image post format or the first image found in post content will be used.

Post with comments disabled

This is an example of gallery post format and also an example of disabling post comments. You don’t really need to set post featured image for gallery post formats, it’s up to you.

Sounds from Earth

This is an example of audio post format. You don’t really need to set post featured image for audio post formats, it’s up to you.

Status post example

Status post format displays the whole content of your post. It is a short status update, similar to a Twitter status update. You can set post featured image or your gravatar will be displayed instead.