Hyperlinks and GIFs in posts

When creating new post on the forums -

1. Hyperlinks don't get auto generated like they do in comments.

For example, this - http://cdn0.sbnation.com/imported_assets/1774143/tumblr_mq997e78uT1rqb1dxo1_500.gif

2. GIFs don't animate like they do in comments.

For example, this

Tumblr_mq997e78ut1rqb1dxo1_500_medium

via cdn0.sbnation.com

Am I missing something? This seems very basic.